Anchor: White-ruffed langur monkeys leap and swing in the treetops, sending flights of green parakeets screeching.
Entailed: You can see white-ruffed langur monkeys that leap and swing on the trees.
Contradiction: That part of the field lacks trees, so the monkeys have to walk all their way.
Contradiction: the people are at the cabin sleeping
Contradiction: How has the weather been recently?
Contradiction: Malamud based his Selected Stories on the jungle book. 
Contradiction: A band plays songs on the street corner.