A person walks in the valley between tall mountains.
A person is cooking dinner.
the person walking in the valley can not be cooking dinner
exists e1 s1 x1 x2 x3.(n_valley(x2) & in(e1,x2) & between(x2,x3) & n_mountain(x3) & a_tall(s1) & Theme(s1,x3) & Actor(e1,x1) & v_walk(e1) & n_person(x1))
exists p1 x1.(exists s1 x2.((x1 = x2) & n_dinner(x2) & a_cooking(s1) & Theme(s1,x2)) & n_person(x1))