Anchor: An Asian woman with large personal headphones and a surgical mask rides a commuter train while three men, also wearing masks, look at her.
Entailed: An Asian woman with large personal headphones and a surgical mask rides a commuter train
Contradiction: An Asian woman with large personal headphones and a surgical mask doesn't ride a commuter train
Contradiction: There were no standards for the costs.
Contradiction: It's a potluck, and everyone brings their specialty dish.
Contradiction: I sleep like a baby at night. 
Contradiction: A skateboarder is doing a skateboard trick.