context: A man in blue clothing carries a yellow bucket while walking in the water near a pelican.
hypothesis: It is certain that a man with a bucket is catching fish in the water.
valid_hypothesis: It is probably not the case that a man with a bucket is catching fish in the water.
invalid_hypothesis: It is certain that a man with a bucket is catching fish in the water.
hypothesis_assertion: A man with a bucket is catching fish in the water.