Two men are sitting on camp chairs while reading or studying.
two men are sitting in a chair and reading the books
Reading is same as reading.
exists e1 x1 x2 x3 x4.(while(e1,x4) & (n_read(x4) | n_study(x4)) & on(e1,x2) & n_chair(x2) & of(x2,x3) & n_camp(x3) & Actor(e1,x1) & v_sit(e1) & n_man(x1) & card_eq_2(x1))
exists e1 e2 x1 x2 x3 x4.(n_book(x4) & Theme(e2,x4) & Actor(e2,x3) & v_read(e2) & n_man(x3) & card_eq_2(x3) & in(e1,x2) & n_chair(x2) & Actor(e1,x1) & v_sit(e1) & n_man(x1) & card_eq_2(x1))