Two construction workers sitting on some pipes while one waves, obscuring his face.
A man is running on a treadmill
sitting and running are different actions
exists e1 e2 x1 x2 x3 x4 x5 x6 x7.(Theme(e2,x7) & Actor(e2,x5) & v_obscure(e2) & n_face(x7) & of(x7,x2) & n_male(x2) & n_worker(x5) & of(x5,x6) & n_construction(x6) & card_eq_2(x5) & while(e1,x4) & n_wave(x4) & card_eq_1(x4) & on(e1,x3) & n_pipe(x3) & Actor(e1,x1) & v_sit(e1) & n_worker(x1) & of(x1,x2) & n_construction(x2) & card_eq_2(x1))
exists e1 x1 x2.(on(e1,x2) & n_treadmill(x2) & Actor(e1,x1) & v_run(e1) & n_man(x1))