context: A man wearing no shirt is lifting a shovel by a wheelbarrow as he works outside.
hypothesis: It is highly likely that a man is working outside wearing no shirt because it's hot outside.
valid_hypothesis: It is highly likely that a man is working outside wearing no shirt because it's hot outside.
invalid_hypothesis: It is probably not the case that a man is working outside wearing no shirt because it's hot outside.
hypothesis_assertion: A man is working outside wearing no shirt because it's hot outside.