A large group of people look as if they are in a band, and they are practicing classical music with guitars, violins, and cellos.
Most of the musicians are sitting down.
Not everyone who plays an instrument does it sitting down.
exists e1 e2 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 s1 x1 x2.(n_musician(x2) & a_down(s1) & Manner(e1,s1) & Actor(e1,x1) & v_sit(e1) & of(x1,x2) & n_most(x1))