Anchor: a crowded beach full of lots of people
Entailed: The beach is crowded with people.
Contradiction: The beach is deserted in winter.
Contradiction: It doesn't really get hot here. 
Contradiction: There are visible fish swimming in the pristine water.
Contradiction: Two women standing on a sidewalk are watching two  men on scaffolding beside a white building.
Contradiction: I fished growing up.