Anchor: Tucked behind Rua Joao Tavira and Rua da Carreira is Praca do Munic?­pio, the town's dignified main square, with a mosaic of black-and-white stones and pretty white buildings on three sides.
Entailed: There's a mosaic of black and white stones in the town's main square.
Contradiction: There are pretty white buildings situated in the town square but there are no black and white stones.
Contradiction: There are no directives contained in these sections.  
Contradiction: She gave a blow on the head, but she is fine now.
Contradiction: Probably the former.
Contradiction: The men are near computers.