Anchor: A pedestrian walking under a lovely old tree bare of leaves but green grass underfoot, with building tops showing below.
Entailed: someone walking by a dead tree.
Contradiction: A person wearing galoshes splashes through a muddy hole.
Contradiction: The pedestrian walks on pavement.
Contradiction: A pedestrian walks under a lushly blooming tree.
Contradiction: a person is lying on his back on the floor
Contradiction: the lumberjack looking for a tree in a swamp.