Anchor: The spectacular invasion by Alexander the Great of Macedonia in 326 b.c. ended Persian presence, but apart from opening up trade with Asia Minor and the eastern Mediterranean, the Greeks left no lasting impact on India during the two-year campaign.
Entailed: The Greeks invaded Macedonia led by Alexander the Great.
Contradiction: Alexander the Great never invaded Macedonia.
Contradiction: There is snow on the lawn and it's the middle of winter.
Contradiction: You'll need ID if you wish to tour the legislators' domain.
Contradiction: Everyone hates the mayor, he doesn't support schools. 
Contradiction: To understand a case, the researcher has to form ideas about what is happening.