A large group of people look as if they are in a band, and they are practicing classical music with guitars, violins, and cellos.
The group of people are preparing for an orchestra event.
Not everyone who is playing stringed instruments is preparing for an orchestra event.
exists e2 e1 p1 s1 s2 x1 x2 x3 x4 x5 x6 x7.(Theme(e2,x4) & Actor(e2,x3) & v_practice(e2) & subset_of(x7,x4) & n_cello(x7) & subset_of(x3,x4) & with(x3,x5) & rel(x5,x6) & n_violin(x6) & n_guitar(x5) & n_music(x3) & a_classical(s2) & Theme(s2,x3) & n_thing(x3) & n_thing(x3) & exists p2 x8.(in(x3,x8) & n_band(x8)) & as(e1,p1) & Actor(e1,x1) & v_look(e1) & of(x1,x2) & n_people(x2) & n_group(x1) & a_large(s1) & Theme(s1,x1))
exists e1 x1 x2 x3 x4.(n_group(x1) & for(e1,x3) & n_event(x3) & of(x3,x4) & n_orchestra(x4) & Actor(e1,x1) & v_prepare(e1) & of(x1,x2) & n_people(x2))