context: A professional swimmer spits water out after surfacing while grabbing the hand of someone helping him back to land.
hypothesis: It is almost certain that the swimmer almost drowned after being sucked under a fast current.
valid_hypothesis: There is little chance that the swimmer almost drowned after being sucked under a fast current.
invalid_hypothesis: It is almost certain that the swimmer almost drowned after being sucked under a fast current.
hypothesis_assertion: The swimmer almost drowned after being sucked under a fast current.