Anchor: The fact, according to geologists, is that the Kathmandu Valley was indeed once a lake, though the valley's waters now drain through the narrow cleft of Chobar Gorge, which was most likely created by a large earthquake.)
Entailed: Geologists believe that the Kathmandu Valley was a lake at some point in its history. 
Contradiction: The fact, according to geologists, is that the Kathmandu Valley has never contained a significant amount of water. 
Contradiction: I left the school because it was so big.
Contradiction: Tuppence moved her shoulders up and down. 
Contradiction: I don't think the consumer debt is placed upon poor economics.
Contradiction: The nobility rode with their slaves and guards.