A woman is watching a child while he sits on tires.
A woman in babysitting.
The woman is "watching a child" implies she is babysitting.
exists e1 p1 x1 x2.(exists e2 x3.(on(e2,x3) & n_tire(x3) & Actor(e2,x1) & v_sit(e2)) & n_male(x1) & while(e1,p1) & Theme(e1,x2) & Actor(e1,x1) & v_watch(e1) & n_child(x2) & n_woman(x1))
exists x1 x2.(a_topic(x1) & in(x1,x2) & n_babysitting(x2) & n_woman(x1))