A group of people holding musical instrument posing for a photo.
Musicians are getting their picture taken after a concert.
Not all people holding instruments are musicians. Not all people holding instruments participate in concerts.
exists e2 e1 s1 x1 x2 x3 x4 x5 x6.(a_topic(x1) & of(x1,x2) & Theme(e2,x4) & Actor(e2,x3) & v_hold(e2) & for(e1,x6) & n_photo(x6) & Actor(e1,x5) & v_pose(e1) & (x4 = x5) & n_instrument(x4) & a_musical(s1) & Theme(s1,x4) & (x2 = x3) & n_people(x2) & n_group(x1))
exists e2 e1 x1 x2 x3 x4.(ne_nam_musicians(x1) & Theme(e2,x3) & Actor(e2,x1) & v_get(e2) & after(e1,x2) & n_concert(x2) & Theme(e1,x4) & v_take(e1) & (x3 = x4) & n_picture(x3) & of(x3,x2) & n_thing(x2))