An older boy with his arm around a younger kid under a sequoia tree.
Two brothers under a sequoia tree.
A boy can be with a younger kid for many reasons so it can not be assumed they are brothers.
exists s1 s2 x1 x2 x3 x4 x5.(a_topic(x1) & with(x1,x2) & around(x2,x3) & under(x3,x4) & n_tree(x4) & of(x4,x5) & n_sequoium(x5) & n_kid(x3) & r_more(s2) & a_younger(s2) & Theme(s2,x3) & n_arm(x2) & of(x2,x1) & n_male(x1) & n_boy(x1) & r_more(s1) & a_older(s1) & Theme(s1,x1))
exists x1 x2 x3.(a_topic(x1) & under(x1,x2) & n_tree(x2) & of(x2,x3) & n_sequoium(x3) & n_brother(x1) & card_eq_2(x1))