A baby in a ball pit and a toddler playing near the feet of the person taking the picture.
A brother and sister play near each other.
Not all babies and toddlers are brother and sister.
exists e1 s1 x1 x2 x3 x4 x5 x6 x7 x8 x9.(n_picture(x9) & n_person(x7) & n_foot(x6) & a_topic(s1) & subset_of(x4,s1) & of(x4,x7) & Theme(e1,x9) & Actor(e1,x8) & v_take(e1) & (x7 = x8) & near(x4,x6) & n_playing(x4) & of(x4,x5) & n_toddler(x5) & subset_of(x1,s1) & in(x1,x2) & n_pit(x2) & of(x2,x3) & n_ball(x3) & n_baby(x1))
exists x1 x2 x3.(all x4.(n_other(x4) -> (a_topic(x1) & near(x1,x4))) & n_play(x1) & of(x1,x3) & n_sister(x3) & of(x1,x2) & n_brother(x2))