A band is rehearsing in their garage.
A group of people is playing music indoors.
A band would also be a group of people. If they are rehearsing, it would follow that they are playing music. If they are in their garage, they would be indoors.
exists e1 x1 x2.(in(e1,x2) & n_garage(x2) & of(x2,x1) & n_thing(x1) & Actor(e1,x1) & v_rehearse(e1) & n_band(x1))
exists e1 x1 x2 x3 x4.(Theme(e1,x3) & Actor(e1,x1) & v_play(e1) & n_indoor(x3) & of(x3,x4) & n_music(x4) & of(x1,x2) & n_people(x2) & n_group(x1))