A boy holding a skateboard is screaming.
A boy is whispering to a younger boy in a crowded room.
You cannot screaming and whispering at the same time since one action is quiet and the other is loud.
exists e1 e2 x1 x2 x3.(Actor(e2,x1) & v_scream(e2) & Theme(e1,x3) & Actor(e1,x2) & v_hold(e1) & n_skateboard(x3) & (x1 = x2) & n_boy(x1))
exists e1 s1 s2 x1 x2 x3.(to(e1,x2) & in(x2,x3) & n_room(x3) & a_crowded(s2) & Theme(s2,x3) & n_boy(x2) & r_more(s1) & a_younger(s1) & Theme(s1,x2) & Actor(e1,x1) & v_whisper(e1) & n_boy(x1))