Premise: "Biker loses control of bike in midair."
Hypothesis: "There was a lack of control by the biker."
Do we know that the hypothesis entailed by the premise?
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There was a lack of control because the biker loses control of the bike.. The answer is: yes.
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Given the sentence "A pretty young lady in a red dress and heels is seen from above walking on a concrete and brick sidewalk." is it true that "A young lady poses for some street shots for her fashion collection."?
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A woman simply walking does not imply that she poses for fashion shots.. The answer is: it is not possible to tell.
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Premise: "A female swimmer in a black bathing suit about to jump off the racing platform into a pool."
Hypothesis: "The swimmer is studying for her math test at the library."
Do we know that the hypothesis entailed by the premise?
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Swimming pools are not found in libraries. A person who is about to jump into a pool is generally not studying at the same time.. The answer is: no.
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