A long-haired dog frolics in a meadow of yellow flowers.
A dog is frolicking.
IF the dog frolics the dog is frolicking.
exists s1 s2 x1 x2 x3 x4.(a_topic(x1) & in(x1,x3) & of(x3,x4) & n_flower(x4) & a_yellow(s2) & Theme(s2,x4) & n_meadow(x3) & n_frolic(x1) & of(x1,x2) & n_dog(x2) & a_long-haired(s1) & Theme(s1,x1))
exists e1 x1.(Actor(e1,x1) & v_frolic(e1) & n_dog(x1))