Three boys without shirts sit on concrete steps next to water.
The water is dirty
There is no evidence that the water is clean nor dirty.
exists e1 s1 x1 x2 x3.(to(e1,x3) & n_water(x3) & r_next(e1) & on(e1,x2) & n_step(x2) & a_concrete(s1) & Theme(s1,x2) & Actor(e1,x1) & v_sit(e1) & -exists x4.(with(x1,x4) & n_shirt(x4)) & n_boy(x1) & card_eq_3(x1))
exists s1 x1.(n_water(x1) & Theme(s1,x1) & a_dirty(s1))