Q: "A gymnast performs with a hula hoop in front of the winners' stand." Does this mean that "The gymnast is performing"?
A: yes

Q: "Three young people in red shirts with Triple Threat Sports inscribed are at a ballgame." Does this mean that "three young people at a ballgame for opening day"?
A: it is not possible to tell

Q: "A couple wearing white shirts are walking down the street while using their cellphones." Does this mean that "A couple are deeply in love."?
A: it is not possible to tell

Q: "A woman in a striped shirt climbs up a mountain." Does this mean that "a woman is outside."?
A:
yes