A girl is jumping on a trampoline with her arms in the air, while a boy in a blue shirt is bouncing on his stomach.
Brother and sister play on a trampoline.
The girl and boy are not necessarily brother and sister.
exists e1 p1 x1 x2 x3 x4 x7.(n_air(x4) & exists e2 s1 x5 x6.(on(e2,x7) & Actor(e2,x5) & v_bounce(e2) & in(x5,x6) & n_shirt(x6) & a_blue(s1) & Theme(s1,x6) & n_boy(x5)) & n_stomach(x7) & of(x7,x2) & n_male(x2) & while(e1,p1) & with(e1,x3) & in(x3,x4) & n_arm(x3) & of(x3,x1) & n_female(x1) & on(e1,x2) & n_trampoline(x2) & Actor(e1,x1) & v_jump(e1) & n_girl(x1))
exists s1 s2 x1 x2 x3.(ne_nam_brother(x1) & a_topic(s1) & subset_of(x2,s1) & on(x2,x3) & n_trampoline(x3) & n_play(x2) & a_sister(s2) & Theme(s2,x2) & subset_of(x1,s1))