context: There are people walking down a busy nighttime street with signs lighting the way.
hypothesis: There is a better than even chance that people are walking down a street holding homemade signs.
valid_hypothesis: There is a better than even chance that people are walking down a street holding homemade signs.
invalid_hypothesis: It is impossible that people are walking down a street holding homemade signs.
hypothesis_assertion: People are walking down a street holding homemade signs.