A couple guys splash through water wearing hard hats.
The guys are working hard on a machine.
A couple guys that splash through water seems more like they are playing than working hard.
exists e2 e1 s1 x1 x2 x3 x4.(for(e1,e2) & Theme(e2,x4) & Actor(e2,x1) & v_wear(e2) & n_hat(x4) & a_hard(s1) & Theme(s1,x4) & through(e1,x3) & n_water(x3) & Actor(e1,x1) & v_splash(e1) & n_guy(x1) & of(x1,x2) & n_couple(x2))
exists e1 s1 x1 x2.(n_guy(x1) & on(e1,x2) & n_machine(x2) & a_hard(s1) & Manner(e1,s1) & Actor(e1,x1) & v_work(e1))