Anchor: Even his arm twitched as if some muscle was activated by memory to make one of those informal military salutes the scouts favored.
Entailed: His arm twitched as if activated by muscle memory to make an informal military salute. 
Contradiction: He didn't have any muscle memory and just stood there unmoving. 
Contradiction: A girl rocks in a rocking chair.
Contradiction: A soccer player is kicking a ball up in the air.
Contradiction: An old woman eats pie.
Contradiction: A man and a dog are performing.