Q: "A woman with pigtails is riding a yellow and blue bicycle in the dirt while wearing a blue outfit." Does this mean that "A woman with pigtails is riding a yellow and blue bicycle"?
A: yes

Q: "A man sitting under an umbrella, having his picture drawn by a sidewalk artist." Does this mean that "The man is having himself drawn."?
A: yes

Q: "A group of children in white shirts are sitting and standing around white tables in a room." Does this mean that "A group of children are inside."?
A: yes

Q: "The pretty bride is holding a purple bouquet while she is walking with the man." Does this mean that "The bride is walking with her dad."?
A:
it is not possible to tell