Anchor: Inbound mail could be viewed as a subclass of mail.
Entailed: Inbound mail can be considered as a subclass of mail.
Contradiction: Inbound mail can be seen as a separate class of mail.
Contradiction: Children play in the mud.
Contradiction: The term "otherwise use" was left undefined in the original legislation.
Contradiction: High volume harms postal density.
Contradiction: Two humans outdoors.