A group of people are playing instruments while sitting at a table.
A group of people are making music.
A table is a common location, playing in a common location is making music. So, playing instruments while sitting at the same table is making music.
exists e2 e1 x1 x2 x3 x4.(while(e1,e2) & at(e2,x4) & n_table(x4) & Actor(e2,x1) & v_sit(e2) & Theme(e1,x3) & Actor(e1,x1) & v_play(e1) & n_instrument(x3) & of(x1,x2) & n_people(x2) & n_group(x1))
exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_make(e1) & n_music(x3) & of(x1,x2) & n_people(x2) & n_group(x1))