Text: Water gushes down from the mountains; some is diverted to hydro-electric stations, but a lot simply drains off into the sea, splashing off passing cars like a natural car wash or amusement-park ride.
Entailment: Some of the water gushing down the mountains is used for hydro-electricity.
Contradiction: None of the water gushing down the mountains is diverted to hydro-electric stations.