For this chain-of-thought reasoning and answer, what was the question?
Roger Federer will not necessarily beat an opponent just because he strikes a tennis ball with a forehand swing.
 A: it is not possible to tell
Q: Test for natural language inference.
Premise: "Roger federer strikes a tennis ball with a forehand swing on a tennis court."
Hypothesis: "Federer will beat his opponent."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell