Anchor: A green sign lists the directions, names, and distance of two different towns.  
Entailed: There are directional instructions about two places on the sign.
Contradiction: The sign is blue.
Contradiction: A piece of art by Andy Warhol.
Contradiction: The purple sign was incredibly unhelpful as it held no useful information at all.
Contradiction: A green sign is blank.
Contradiction: The red sign lists information about the lake.