A man showing his muscles.
The man eats his lunch.
A man could not be showing his muscles while he eats his lunch
exists e1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_show(e1) & n_muscle(x3) & of(x3,x1) & n_male(x1) & (x1 = x2) & n_man(x1))
exists e1 x1 x2.(n_lunch(x2) & of(x2,x1) & n_male(x1) & n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_eat(e1))