Two men wearing jeans sit along muddy pipes.
Two men are working on pipes.
Just because men sit along muddy pipes it does not mean they are working on pipes.
exists e2 e1 s1 x1 x2 x3 x4.(along(e2,x4) & n_pipe(x4) & a_muddy(s1) & Theme(s1,x4) & Actor(e2,x1) & v_sit(e2) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_jeans(x3) & (x1 = x2) & n_man(x1) & card_eq_2(x1))
exists e1 x1 x2.(on(e1,x2) & n_pipe(x2) & Actor(e1,x1) & v_work(e1) & n_man(x1) & card_eq_2(x1))