A group of musicians are playing together.
There are a group of people with musical instruments in one area.
A group of people with musical instruments is a rephrasing of a group of musicians.
exists e1 s1 x1 x2.(a_together(s1) & Manner(e1,s1) & Actor(e1,x1) & v_play(e1) & of(x1,x2) & n_musician(x2) & n_group(x1))
exists p1 x1 x2.(in(p1,x2) & n_area(x2) & card_eq_1(x2) & exists s1 x3 x4 x5.((x1 = x3) & of(x3,x4) & with(x4,x5) & n_instrument(x5) & a_musical(s1) & Theme(s1,x5) & n_people(x4) & n_group(x3)))