Anchor: A crowd watching air balloons at night.
Entailed: There's a gathering of people watching hot air balloons flying at night.
Contradiction: Air balloons land on the ground at noon.
Contradiction: The balloons are full of concrete.
Contradiction: People are watching airplanes at 10:00 a.m.
Contradiction: There's a group of people watching a major league baseball game.
Contradiction: No one is paying attention to the air balloons in the sky.