A group of kids playing what looks like violins in a band class most likely in a school.
The schools band is practicing on their instruments.
A group of kids could be in the school's band.  Violins could be considered instruments.
exists x1 x2 x3.(a_topic(x1) & of(x1,x2) & exists e1 e2 s1 x4 x5 x6 x7 x8 x9.(n_thing(x4) & Theme(e2,x4) & Actor(e2,x3) & v_play(e2) & in(e1,x9) & n_school(x9) & like(e1,x5) & in(x5,x6) & r_most(s1) & Theme(s1,x8) & a_likely(s1) & (x6 = x8) & n_class(x6) & of(x6,x7) & n_band(x7) & n_violin(x5) & Actor(e1,x4) & v_look(e1)) & (x2 = x3) & n_kid(x2) & n_group(x1))
exists e1 x1 x2 x3.(n_instrument(x3) & of(x3,x1) & n_thing(x1) & n_band(x1) & of(x1,x2) & n_school(x2) & on(e1,x3) & Actor(e1,x1) & v_practice(e1))