Anchor: Eligible aliens leave the United States for a variety of reasons, including family emergencies, visits with families and friends, to obtain medical care, and for important holidays.
Entailed: Sometimes aliens leave the US to get medical care.
Contradiction: Aliens never leave the US>
Contradiction: A person is sleeping in a hotel room.
Contradiction: An outfitter will take you up to the headwaters.
Contradiction: The child plays at the park.
Contradiction: Four musicians playing together