Anchor: The within-sites data bases became less extensive as observation times were shortened.
Entailed: When times for observation were decreased, the data bases became less extensive. 
Contradiction: The data bases became more extensive with short observation times. 
Contradiction: Everyone just ran away without trying to fight.
Contradiction: Adjacent to Lac du Bourget, there is a spa town that has advertised cures for rheumatism for hundreds of years.
Contradiction: child trying to jump hard
Contradiction: A dog is running after a bird.