A skinny guy is eating a sandwich while using the computer.
The guy is skinny
The guy is skinny who is using a computer
exists e2 e1 s1 x1 x2 x3.(n_computer(x3) & while(e1,e2) & Theme(e2,x3) & Actor(e2,x1) & v_use(e2) & Theme(e1,x2) & Actor(e1,x1) & v_eat(e1) & n_sandwich(x2) & n_guy(x1) & a_skinny(s1) & Theme(s1,x1))
exists s1 x1.(n_guy(x1) & Theme(s1,x1) & a_skinny(s1))