Anchor: Tourist are roaming around the city and some of them take a photo
Entailed: The people roaming are tourists.
Contradiction: They came for a vacation from Pluto.
Contradiction: The square is closed off every weekend except for holidays and mass.
Contradiction: The modern challenge is the implementation of intervention guidelines by government agencies and professional organizations at the community level. 
Contradiction: The Congress shares no powers with the Senate.
Contradiction: A man is sitting behind a machine.