A worker in a blue hat is fixing the wall.
The worker is eating lunch on the wall.
The worker is either fixing the wall or he is eating.
exists e1 s1 x1 x2 x3.(n_wall(x3) & Theme(e1,x3) & Actor(e1,x1) & v_fix(e1) & in(x1,x2) & n_hat(x2) & a_blue(s1) & Theme(s1,x2) & n_worker(x1))
exists e1 x1 x2 x3.(n_wall(x3) & n_worker(x1) & on(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_eat(e1) & n_lunch(x2))