A brown dog carries a multiple colored toy in the grass.
A dog is playing fetch
A dog that carries a toy in the grass is not necessarily playing fetch.
exists e1 e2 s1 x1 x2 x3 x4 x5.(n_grass(x5) & Theme(e2,x2) & Actor(e2,x1) & v_carry(e2) & in(e1,x5) & Recipient(e1,x4) & Theme(e1,x3) & v_color(e1) & n_toy(x4) & (x2 = x3) & n_multiple(x2) & n_dog(x1) & a_brown(s1) & Theme(s1,x1))
exists e1 s1 x1.(a_fetch(s1) & Manner(e1,s1) & Actor(e1,x1) & v_play(e1) & n_dog(x1))