Assertion: attachment | /r/HasProperty | single document
Facets:
Source sentences:
text: Thus, we can see that an attachment is a single document that is attached to the end of some main work: document, email, etc.
text: Attachment is a single document that is joined in an email whereas appendix could be a group of documents attached together at the end of a book, a document, a report, a legal contract, etc.