Assertion: mailbox | /r/HasProperty | equipped with mechanism
Facets:
value: for notifying the postman
type: PURPOSE
Source sentences:
text: In the US, wall-mounted or curbside mailboxes that are only designed for receiving incoming mail are known as "limited-service" mailboxes, while mailboxes equipped with a mechanism for notifying the postman to collect outgoing mail from the mailbox are known as "full service" mailboxes.