Anchor: Emergency departments are frequently the only point of contact with the health care system for indigent patients.
Entailed: The emergency department is the main point of contact.
Contradiction: There are no points of contact for the department.
Contradiction: The US military will stay in Bosnia for the next 8 years. 
Contradiction: People are about to eat lunch.
Contradiction: Sue went to school.
Contradiction: There are dogs racing at a track.