Anchor: It's more reasonable to assume that they know they will probably lose but are happy to take that chance for 1) the pleasure of playing and 2) the chance of coming out ahead.
Entailed: They are happy to take the chance even though they will probably lose.
Contradiction: They are not happy to take the chance because they will probably lose.
Contradiction: Nobody is playing.
Contradiction: There are four people on a park bench.
Contradiction: The boy is sitting in a big field.
Contradiction: Mount zion isn't actually a mountain, but a hill.