Anchor: 5 The mailbox rule specifies that no one other than the Postal Service (and the addressee) may put mail into the box.
Entailed: Only the Postal Service is allowed to place mail into the mailbox according to the mailbox rule.
Contradiction: The mailbox rule allows the Postal Service and any others who are deemed necessary to put mail into the box.
Contradiction: workers eating lunch at work
Contradiction: We are still the richest in the whole country.
Contradiction: We can't possibly do this.
Contradiction: A small dog with a ball walking around.