premise: A boy in a red shirt with arms outstretched on the side of hill.
hypothesis: A girl is singing on a hillside.
explanation_1: It is either a boy or a girl.
explanation_2: It can either e a girl or a boy, the gender is contradictory.
explanation_3: A boy is different from a girl.
premise_logic: exists e1 s1 x1 x2 x3 x4 x5 x6.(n_side(x5) & a_topic(x1) & in(x1,x2) & with(x2,x3) & on(e1,x5) & of(x5,x6) & n_hill(x6) & Theme(e1,x4) & v_outstretch(e1) & (x3 = x4) & n_arm(x3) & n_shirt(x2) & a_red(s1) & Theme(s1,x2) & n_boy(x1))
hypothesis_logic: exists e1 x1 x2.(on(e1,x2) & n_hillside(x2) & Actor(e1,x1) & v_sing(e1) & n_girl(x1))