A person is chopping vegetables on a cutting board.
A woman is washing dishes.
The person can't be chopping vegetables and washing dishes at the same time.
exists e2 e1 x1 x2 x3.(on(e1,x3) & n_board(x3) & Actor(e2,x3) & v_cut(e2) & Theme(e1,x2) & Actor(e1,x1) & v_chop(e1) & n_vegetable(x2) & n_person(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_wash(e1) & n_dish(x2) & n_woman(x1))