Two people buying a child up to his neck in sand at the beach.
two kids bury their little brother at the beach
Not all people after kids. Interaction doesn't make the child their brother.
exists e1 x1 x2 x3 x4 x5 x6.(n_beach(x6) & a_topic(x1) & at(e1,x6) & in(e1,x5) & n_sand(x5) & to(e1,x4) & n_neck(x4) & of(x4,x3) & n_male(x3) & r_up(e1) & Theme(e1,x3) & Actor(e1,x2) & v_buy(e1) & n_child(x3) & (x1 = x2) & n_people(x1) & card_eq_2(x1))
exists e1 s1 x1 x2 x3.(n_beach(x3) & Theme(e1,x2) & Actor(e1,x1) & v_bury(e1) & at(x2,x3) & n_brother(x2) & a_little(s1) & Theme(s1,x2) & of(x2,x1) & n_thing(x1) & n_kid(x1) & card_eq_2(x1))