context: People working digging a hole.
hypothesis: It is highly likely that people are using shovels and trowels to dig a hole.
valid_hypothesis: It is highly likely that people are using shovels and trowels to dig a hole.
invalid_hypothesis: It is unlikely that people are using shovels and trowels to dig a hole.
hypothesis_assertion: People are using shovels and trowels to dig a hole.