A boy doing a skateboard trick
The boy is eating an ice cream.
The boy feasibly cannot be eating and also doing a skateboard trick at the same time.
exists e1 x1 x2 x3 x4.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_do(e1) & n_trick(x3) & of(x3,x4) & n_skateboard(x4) & (x1 = x2) & n_boy(x1))
exists e1 x1 x2 x3.(n_boy(x1) & Theme(e1,x2) & Actor(e1,x1) & v_eat(e1) & n_cream(x2) & of(x2,x3) & n_ice(x3))