Anchor: Sunbathers frolic on the beach under a bright sun.
Entailed: People are sunbathing on a beach.
Contradiction: There are no sunbathers on the beach
Contradiction: sunbathers are enjoying the rain
Contradiction: The winter cold keeps most people indoors this time of year.
Contradiction: It is a cloudy day.
Contradiction: The people are gathered around a fireplace in a log cabin.