subject

• CURIE: gmeow:subject
• IRI: https://blackcatinformatics.ca/gmeow/subject
• Category: property
• Defined by: gmeow:slices/email
• Box roles: RBox role (What is this?)

The subject line of a message (RFC 5322 Subject).

Structure

Property shape: datatype property; gmeow:Message -> rdfs:Literal

Practical Pattern

Use gmeow:subject from gmeow:Message to rdfs:Literal when the relationship itself belongs in the native GMEOW graph.

Example Snippets

These snippets are generated from canonical slice examples and trimmed to the Turtle blocks where this term appears.

Message Thread

• Source: slices/extensions/email/examples/message-thread.ttl
• Examples catalog: open in catalog#example-slices-extensions-email-examples-message-thread

# SPDX-FileCopyrightText: 2026 Blackcat Informatics® Inc. <paudley@blackcatinformatics.ca>
# SPDX-License-Identifier: CC-BY-4.0
#
# Worked example: an email message and its reply . A gmeow:EmailMessage
# carries the RFC 5322 envelope as first-class edges to gmeow:EmailAddresses —
# gmeow:from, gmeow:to, gmeow:cc — plus a gmeow:subject. Threading is a relation
# between messages, not a flat field: a reply points at what it answers with
# gmeow:inReplyTo, so the conversation graph is reconstructable from the messages
# themselves. The EmailAddresses are the reified gmeow:ContactPoints of the
# contacts slice — the same objects a person reaches mail through.
@prefix gmeow: <https://blackcatinformatics.ca/gmeow/> .
@prefix ex:    <https://blackcatinformatics.ca/gmeow/examples/email/> .

# --- The original message: Alice → Bob, cc Carol.
ex:msg1 a gmeow:EmailMessage ;
    gmeow:from    ex:aliceAddr ;
    gmeow:to      ex:bobAddr ;
    gmeow:cc      ex:carolAddr ;
    gmeow:subject "Ontology review draft" .

Teaching And Being Taught

• Source: slices/core/learning/examples/teaching-and-being-taught.ttl
• Examples catalog: open in catalog#example-slices-core-learning-examples-teaching-and-being-taught

@prefix gmeow: <https://blackcatinformatics.ca/gmeow/> .
@prefix ex:    <https://blackcatinformatics.ca/gmeow/examples/learning/> .
@prefix rdfs:  <http://www.w3.org/2000/01/rdf-schema#> .
@prefix xsd:   <http://www.w3.org/2001/XMLSchema#> .



# --- The reified instruction: one teacher, TWO learners taught together, one
#     subject. teacher ≠ learner (gmeow:TeachingShape); co-taught learners share
#     ONE gmeow:Teaching rather than one Teaching each.
ex:lesson a gmeow:Teaching ;
    gmeow:teacher ex:mentor ;
    gmeow:learner ex:lillith, ex:rowan ;
    gmeow:subjectTaught ex:balancing ;
    rdfs:label "a group balancing lesson"@en .

Common Companion Terms

gmeow:Message

External Equivalences

Equivalent or closely aligned targets: nmo

Linkages

Generated from the canonical mapping DSL. SSSOM files are the generated public interchange form for term equivalences.

Term Equivalences