Given the following reasoning and answer, what was the question? The instruments can be anything not just a violin or flute.
 The answer: it is not possible to tell
The question Test for natural language inference.
Premise: "Two girls are sitting together while playing their instruments."
Hypothesis: "One girl practices the violin while the other plays the flute."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell