A man picks up and swings a young child while another child looks on.
The child is the man's.
Just because a man picks up and swings a young child while another child looks on doesn't imply that the child is the man's.
exists e1 e2 p1 p2 p3 s1 x1 x2 x3 x5.(exists e4 p5 x6.(exists s4.(Theme(s4,x6) & a_on(s4)) & Topic(e4,p5) & Actor(e4,x6) & v_look(e4) & n_child(x6) & -(x6 = x5)) & n_child(x5) & while(e2,p3) & n_child(x3) & n_child(x3) & a_young(s1) & Theme(s1,x3) & Time(e2,x3) & Actor(e2,x2) & v_swing(e2) & n_man(x2) & exists e3 p4 x4.(exists s3.(Theme(s3,x4) & a_on(s3)) & Topic(e3,p4) & Actor(e3,x4) & v_look(e3) & n_child(x4) & -(x4 = x3)) & while(e1,p2) & exists s2.(Theme(s2,x1) & a_up(s2)) & Topic(e1,p1) & Actor(e1,x1) & v_pick(e1) & n_man(x1))
exists p1 x1 x2 x3.(n_'s(x2) & of(x2,x3) & n_man(x3) & n_child(x1) & (x1 = x2))