Anchor: They waded across the stream, sliding their feet across the bedrock to avoid the spikes that had hobbled their horses the night before.
Entailed: They were careful while leading the animals across the waters.
Contradiction: They used a boat to cross the river. 
Contradiction: A woman stealing a guitar.
Contradiction: A group of cyclists cross a bridge.
Contradiction: a man walking his dingo
Contradiction: Someone is working.