Anchor: A race car is observed by the crowd.
Entailed: A race car is being watched.
Contradiction: A house is being observed by the crowd.
Contradiction: The fourth floor has the Galleria Sabauda, which has a collection of only African art.
Contradiction: A woman is selling things.
Contradiction: The city was filthy and disgusting. 
Contradiction: The government collects amounts to exercise its power