premise: Two people in winter clothing sliding down a snow-covered hill.
hypothesis: Two brothers are having fun in the snow.
explanation_1: We have no idea if the two people are brothers. They could be anyone.
explanation_2: The two people aren't necessarily brothers, and sliding down a hill doesn't mean they are having fun.
explanation_3: People are not assumed to be brothers.  Sliding down a hill does not necessarily imply having fun.
premise_logic: exists e1 s1 s2 x1 x2 x3 x4 x5.(a_topic(x1) & a_down(s2) & Manner(e1,s2) & Theme(e1,x5) & Actor(e1,x4) & v_slide(e1) & n_hill(x5) & a_snow-covered(s1) & Theme(s1,x5) & (x1 = x4) & in(x1,x2) & n_clothing(x2) & of(x2,x3) & n_winter(x3) & n_people(x1) & card_eq_2(x1))
hypothesis_logic: exists e1 x1 x2 x3.(n_snow(x3) & in(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & n_fun(x2) & n_brother(x1) & card_eq_2(x1))