Two firemen turning the water on in the hoses.
Firefighters preparing to douse flames.
Firefighters could be turning water on for other reasons than preparing to douse flames.
exists e1 s1 x1 x2 x3.(n_hose(x3) & n_water(x2) & in(e1,x3) & a_on(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_turn(e1) & n_fireman(x1) & card_eq_2(x1))
exists e1 x1 x2 x3 x4.(a_topic(x1) & to(e1,x3) & n_flame(x3) & of(x3,x4) & n_douse(x4) & Actor(e1,x2) & v_prepare(e1) & (x1 = x2) & n_firefighter(x1))