**1. Create the collection described by pinax.json**  

@test_2_collection:collection {  
  title: "Test-2 Collection",  
  creator: [@substack, @nchimicles, @arke_institute],  
  institution: @test_2,  
  created: @date_2017,  
  language: "en",  
  description: "A collection of various posts, datasets, and metadata files including tutorials, announcements, historical essays, and system files from the Arke Institute digital collection.",  
  access_url: "PLACEHOLDER",  
  source: "PINAX",  
  rights: "Copyright Substack, Unknown"  
}  

**2. Link the metadata document to the collection**  

@file_pinax -> describes -> @test_2_collection  

**3. Add creators, institution and place information**  

@substack -> creator_of -> @test_2_collection  
@nchimicles -> creator_of -> @test_2_collection  
@arke_institute -> creator_of -> @test_2_collection  

@test_2_collection -> place -> [@europe, @florence, @bruges, @paris, @spain, @jerusalem, @rome, @germany]  

**4. Define additional concepts that appear only in the pinax subjects list**  

@email_marketing:concept {description: "Use of electronic mail to promote products, services, or content"}  
@content_management:concept {description: "Processes and tools for creating, storing, and delivering digital content"}  
@newsletters:concept {description: "Periodic email publications sent to a subscriber list"}  

**5. Connect the collection to all of its subjects (synthesis across sub‑directories)**  

@posts_collection -> subject -> @substack  
@posts_collection -> subject -> @editor_tutorial  
@posts_collection -> subject -> @announcements  
@posts_collection -> subject -> @subscriptions  
@posts_collection -> subject -> @newsletter  
@posts_collection -> subject -> @medieval_europe  
@posts_collection -> subject -> @catholic_church  
@posts_collection -> subject -> @indulgence_system  
@posts_collection -> subject -> @wealth_inequality  
@posts_collection -> subject -> @social_hierarchy  
@posts_collection -> subject -> @christianity  
@posts_collection -> subject -> @historical_analysis  
@posts_collection -> subject -> @economic_history  
@posts_collection -> subject -> @religious_history  
@posts_collection -> subject -> @social_critique  

@newsletter_posts_dataset -> subject -> @newsletters  
@newsletter_posts_dataset -> subject -> @email_marketing  
@newsletter_posts_dataset -> subject -> @content_management  

@test_2_collection -> subject -> @substack  
@test_2_collection -> subject -> @editor_tutorial  
@test_2_collection -> subject -> @announcements  
@test_2_collection -> subject -> @subscriptions  
@test_2_collection -> subject -> @newsletter  
@test_2_collection -> subject -> @medieval_europe  
@test_2_collection -> subject -> @catholic_church  
@test_2_collection -> subject -> @indulgence_system  
@test_2_collection -> subject -> @wealth_inequality  
@test_2_collection -> subject -> @social_hierarchy  
@test_2_collection -> subject -> @christianity  
@test_2_collection -> subject -> @historical_analysis  
@test_2_collection -> subject -> @economic_history  
@test_2_collection -> subject -> @religious_history  
@test_2_collection -> subject -> @social_critique  
@test_2_collection -> subject -> @newsletters  
@test_2_collection -> subject -> @email_marketing  
@test_2_collection -> subject -> @content_management  
@test_2_collection -> subject -> @metadata  
@test_2_collection -> subject -> @system_files  
@test_2_collection -> subject -> @digital_preservation  

**6. Show that the two collection‑level entities share material**  

@test_2_collection -> related to -> @posts_collection {description: "Both aggregate the same set of Substack posts, newsletter datasets and system‑file metadata"}  

**7. Aggregate the concrete documents that belong to the Test‑2 Collection**  

@test_2_collection -> includes -> [  
  @substack_editor_tutorial,  
  @coming_soon_announcements,  
  @modern_indulgence,  
  @file_132220171_7fb:document,  
  @newsletter_posts_dataset,  
  @file_pinax,  
  @file_ds_store,  
  @file_posts_csv  
]  

**8. Link the newsletter‑posts dataset to the same documents already referenced in the posts subdirectory**  

@newsletter_posts_dataset -> contains -> [@post_125962878_coming_soon, @post_133047701_modern_indulgence, @post_132220171_7fb, @post_125962877_how_to_use_the_substack_editor]  

@post_125962878_coming_soon -> corresponds to -> @coming_soon_announcements  
@post_133047701_modern_indulgence -> corresponds to -> @modern_indulgence  
@post_132220171_7fb -> corresponds to -> @file_132220171_7fb:document  
@post_125962877_how_to_use_the_substack_editor -> corresponds to -> @substack_editor_tutorial  

**9. System‑files metadata synthesis**  

@file_pinax -> has subject -> @metadata  
@file_pinax -> has subject -> @system_files  
@file_pinax -> has subject -> @digital_preservation  

@file_ds_store -> type -> @image_asset  

**10. Overall cross‑source picture**  

- The **Test‑2 Collection** aggregates:  
  * Substack tutorial & announcement content (from *posts*).  
  * Newsletter‑post dataset and its individual newsletter documents (from *newsletter_posts*).  
  * System‑file metadata and auxiliary assets (from *system_files*).  

- All three sub‑directories converge on a shared thematic core (Substack platform, medieval‑Europe religious/economic analysis, and digital‑preservation concerns), reflected by the extensive list of shared **subjects** and **places**.  

- The collection’s creators (**@substack**, **@nchimicles**, **@arke_institute**) appear both as metadata creators and as platform hosts, establishing a clear **organizational synthesis** across the dataset.