A young boy is looking and touching a bike
A man watches as his son open a birthday gift.
One cannot assume that there is a man watching the young boy or son open a birthday gift.
exists e1 e2 s1 s2 x1 x2 x3.(Theme(e2,x3) & Actor(e2,x2) & v_touch(e2) & n_bike(x3) & n_boy(x2) & a_young(s2) & Theme(s2,x2) & Actor(e1,x1) & v_look(e1) & n_boy(x1) & a_young(s1) & Theme(s1,x1))
exists e1 p1 x1 x2.(exists e2 x3 x4.(Theme(e2,x3) & Actor(e2,x2) & v_open(e2) & n_gift(x3) & of(x3,x4) & n_birthday(x4)) & n_son(x2) & of(x2,x1) & n_male(x1) & as(e1,p1) & Actor(e1,x1) & v_watch(e1) & n_man(x1))