A guy doing a wallride on his bike
A guy is fixing his bike.
Either the guy is doing a wallride on his bike or he is fixing said bike. He cannot do both at the same time.
exists e1 x1 x2 x3 x4.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_do(e1) & on(x3,x4) & n_bike(x4) & of(x4,x1) & n_male(x1) & n_wallride(x3) & (x1 = x2) & n_guy(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_fix(e1) & n_bike(x2) & of(x2,x1) & n_male(x1) & n_guy(x1))