The man is attempting a one-handed handstand in front of a building.
He is sleepwalking.
The man cannot be attempting a one-handed handstand while sleepwalking.
exists e1 s1 x1 x2 x3 x4.(n_man(x1) & in(e1,x3) & of(x3,x4) & n_building(x4) & n_front(x3) & Theme(e1,x2) & Actor(e1,x1) & v_attempt(e1) & n_handstand(x2) & a_one-handed(s1) & Theme(s1,x2))
exists e1 x1.(n_male(x1) & Actor(e1,x1) & v_sleepwalk(e1))