Anchor: They never saw this sign anywhere, but they kept hearing about others who did, or whose friends had seen it, always in different places, and it spoiled their trip for them.
Entailed: They didn't see the sign, bit had heard many instances of those that did. 
Contradiction: They saw the sign right away. 
Contradiction: The old man is wearing a red shirt.
Contradiction: A person performs a snowboarding trick down a mountain.
Contradiction: A woman holds a closed book on the subway platform.
Contradiction: There are patent fees.