Anchor: The botanical term refers to the two-winged fruit (similar to the  key  of the common sycamore) borne by a large number of the forest's tallest trees.
Entailed: Many of the forest's tallest trees bear two-winged fruit.
Contradiction: Two-winged fruit is never found in the forest.
Contradiction: The tan dog is chasing the cats
Contradiction: Everyone is celebrating some kind of event.
Contradiction: I do not think it was ever on ABC.  
Contradiction: A dog is running in the grass near cows.