Anchor: Several workers in hard hats and orange vests are working along train tracks.
Entailed: There are people working outside.
Contradiction: Some people in hard hats are playing ping-pong.
Contradiction: The National Ambient Air Quality Standard does not measure anything, just gives guidelines.
Contradiction: An old man is repairing a typewriter.
Contradiction: Girls are wearing costumes.
Contradiction: It is baffling to me when people show up in the classroom unannounced