Adults take a group of kids to an active outdoor area with lots of trees, where they watch a man play an ethnic instrument that he created.
The kids sing with the music
Just because the kids are watching a man play an ethnic instrument doesn't mean that they sing with the music.
exists e1 p1 s1 x1 x2 x3 x4 x5 x6 x7.(to(e1,x4) & all x8 s2.((n_instrument(x8) & a_ethnic(s2) & Theme(s2,x8)) -> exists e2 e3 x9 x10 x11.(Theme(e3,x9) & Actor(e3,x1) & v_watch(e3) & Theme(e2,x11) & Actor(e2,x1) & v_create(e2) & (x9 = x11) & for(x9,x8) & n_play(x9) & of(x9,x10) & n_man(x10))) & n_male(x1) & n_thing(x1) & where(x4,p1) & with(x4,x6) & of(x6,x7) & n_tree(x7) & n_lot(x6) & n_area(x4) & of(x4,x5) & n_outdoor(x5) & a_active(s1) & Theme(s1,x4) & Theme(e1,x2) & Actor(e1,x1) & v_take(e1) & of(x2,x3) & n_kid(x3) & n_group(x2) & n_adult(x1))
exists e1 x1 x2.(n_music(x2) & n_kid(x1) & with(e1,x2) & Actor(e1,x1) & v_sing(e1))