premise: A person in a red hat with a huge backpack going hiking.
hypothesis: The person is in a hat has a big bag while walking on a tough terrain.
explanation_1: Going hiking does not necessarily imply that it's done on a tough terrain.
explanation_2: A huge backpack is not the same thing as a big bag, nor is there any indication of tough terrain in the first sentence.
explanation_3: The person in the hat may not be hiking or walking along tough terrain.
premise_logic: exists e1 s1 s2 x1 x2 x3 x4 x5.(a_topic(x1) & in(x1,x2) & with(x2,x3) & Theme(e1,x5) & Actor(e1,x4) & v_go(e1) & n_hiking(x5) & (x3 = x4) & n_backpack(x3) & a_huge(s2) & Theme(s2,x3) & n_hat(x2) & a_red(s1) & Theme(s1,x2) & n_person(x1))
hypothesis_logic: exists e1 e2 p1 s1 s2 x1 x2 x3 x4.(n_person(x1) & while(e1,e2) & on(e2,x4) & n_terrain(x4) & a_tough(s2) & Theme(s2,x4) & Actor(e2,x1) & v_walk(e2) & Theme(e1,x3) & Actor(e1,x1) & v_have(e1) & n_bag(x3) & a_big(s1) & Theme(s1,x3) & exists x5.(in(x2,x5) & n_hat(x5)) & (x1 = x2))