context: Six people are riding camels and being led in a straight line across a gently rising sandy slope with mountains in the background, by a man walking and holding the tether of the lead camel.
hypothesis: We doubt that many people are searching for an oasis in the desert.
valid_hypothesis: We doubt that many people are searching for an oasis in the desert.
invalid_hypothesis: It is certain that many people are searching for an oasis in the desert.
hypothesis_assertion: Many people are searching for an oasis in the desert.