Given the sentence "A skateboarder grinds a rail." is it true that "A skateboarder is at a competition."?
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A skateboarder who grinds a rail is not necessarily at a competition.. The answer is: it is not possible to tell.
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Premise: "A group of women are sitting down holding onto hand bars."
Hypothesis: "Some women are sitting."
Do we know that the hypothesis entailed by the premise?
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A group of women and some women are the same thing.. The answer is: yes.
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Premise: "The cowboy prepares to lasso the bull."
Hypothesis: "The cowboy is on a movie set filming for brokeback mountain 2."
Do we know that the hypothesis entailed by the premise?
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The cowboy is either preparing to lasso the bull or filming the movie.. The answer is: no.
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