premise: A girl wearing white is stretching in a somewhat contorted position atop a blue floor while her shadow stretches out below her. hypothesis: The girl is part of an acobatic troupe performing on stage.
neutral: Just because the girl is stretching in a certain outfit, that does not mean that she is in an acrobatic troupe.  Additionally, just because she is stretching on the floor that does not mean she must be performing.  Lastly, the color of the floor does not imply that the girl is on a stage.