Volunteers are in this picture with their dog searching for a missing girls last known playing in the woods.
The volunteers are searching for the missing boy.
The volunteers are either searching for missing girls or for the missing boy. They wouldn't have two search parties for two unrelated cases at once.
exists p1 x1 x2 x3 x8.(n_wood(x8) & n_dog(x3) & of(x3,x2) & n_thing(x2) & n_picture(x2) & exists e1 e2 s1 x4 x5 x6 x7.(in(x1,x2) & with(x2,x3) & for(e1,x5) & n_last(x5) & in(e2,x8) & Recipient(e2,x7) & Theme(e2,x6) & v_know(e2) & n_playing(x7) & (x5 = x6) & n_girl(x5) & a_missing(s1) & Theme(s1,x5) & Actor(e1,x4) & v_search(e1) & (x3 = x4)) & n_volunteer(x1))
exists e1 s1 x1 x2.(n_boy(x2) & a_missing(s1) & Theme(s1,x2) & n_volunteer(x1) & for(e1,x2) & Actor(e1,x1) & v_search(e1))