Anchor: Concealed in the courtyard between them is a Gothic masterpiece, the Sainte-Chapelle, whose fine proportions stand in sharp contrast to the ponderous palace.
Entailed: The sculpture, Sainte-Chapelle, is a Gothic masterpiece. 
Contradiction: Sainte-Chapelle is on permanent display in San Francisco. 
Contradiction: The boy is helping his mother cook dinner.
Contradiction: There is a boy outdoors.
Contradiction: The porter knew she was in the moat house the entire time.
Contradiction: Gee, that is really terrible.