Anchor: Two woman are playing tennis.
Entailed: Two women are playing a sport.
Contradiction: Two women are playing basketball.
Contradiction: Feel free to plunge into the city - there's no need to visit the tourist information office first.
Contradiction: Despite detection techniques, you can't always tell civilian vehicles from military ones. 
Contradiction: A train is speeding through the desert tracks.
Contradiction: The dogs are playing around.