The Mastif playfully pins the German Shepherd in the grass.
Two dogs are playing.
A Mastif and a German Shepherd are certain breeds of dogs, and they are playing.
exists e1 s1 s2 x1 x2 x3.(n_grass(x3) & ne_org_shepherd(x2) & a_german(s1) & Theme(s1,x2) & ne_org_mastif(x1) & in(e1,x3) & a_playfully(s2) & Manner(e1,s2) & Theme(e1,x2) & Actor(e1,x1) & v_pin(e1))
exists e1 x1.(Actor(e1,x1) & v_play(e1) & n_dog(x1) & card_eq_2(x1))