The dogs are joined together with a red harness.
The dogs are being walked in a park.
dogs that are harnessed don't have to be walked in a park
exists e1 s1 s2 x1 x2.(n_dog(x1) & with(e1,x2) & n_harness(x2) & a_red(s2) & Theme(s2,x2) & a_together(s1) & Manner(e1,s1) & Theme(e1,x1) & v_join(e1))
exists e1 x1 x2.(n_dog(x1) & in(e1,x2) & n_park(x2) & Theme(e1,x1) & v_walk(e1))