Little kid playing in water.
The little kids are splashing water amongst themselves.
He referred to kids are which is more than one kid.
exists s1 x1 x2 x3.(a_topic(x1) & in(x1,x3) & n_water(x3) & n_playing(x1) & of(x1,x2) & n_kid(x2) & a_little(s1) & Theme(s1,x1))
exists e1 s1 x1 x2 x3.(n_kid(x1) & a_little(s1) & Theme(s1,x1) & Theme(e1,x2) & Actor(e1,x1) & v_splash(e1) & n_person(x2) & n_amongst(x2) & of(x2,x3) & n_water(x3))