Sentence 1 never states movement, and only sates an adult which could imply anyone not just a parent.


Context: Outdoor street view with a elementary school-age boy in khaki pants and black t-shirt standing on sidewalk next to a wall mural while an adult stoops over an individual sitting on the curb.
Hypothesis: A little boy is walking near his parent next to a building.

Given this context, is the hypothesis true (Yes/No/I don't know)?