A couple of old people playing instruments and singing.
old people are singing for their church
Just because a couple of old people playing instruments and singing, does not imply they are singing for their church.
exists e1 s1 x1 x2 x3 x4 x5 x6.(a_topic(x1) & Theme(e1,x4) & Actor(e1,x3) & v_play(e1) & n_sing(x6) & n_instrument(x5) & subset_of(x6,x4) & subset_of(x5,x4) & (x1 = x3) & of(x1,x2) & n_people(x2) & a_old(s1) & Theme(s1,x2) & n_couple(x1))
exists e1 s1 x1 x2.(for(e1,x2) & n_church(x2) & of(x2,x1) & n_thing(x1) & Actor(e1,x1) & v_sing(e1) & n_people(x1) & a_old(s1) & Theme(s1,x1))