Anchor: The man is dirt bike riding is the stream and climbing the rocks on the bank of the water.
Entailed: The guy on the dirt bike went through the water and went up the bank covered in rocks
Contradiction: A man rides a motorcycle on a road in the mountains.
Contradiction: The guy on the dirt bike crashed
Contradiction: A man is driving alongside a stream.
Contradiction: A man rides his bike indoors.
Contradiction: The man is windsurfing.