premise: A young barefoot girl wearing a helmet walks down a mossy covered fallen down tree.
hypothesis: A female child, with no shoes but a helmet on,  walks on top of a tree that has fallen down.
explanation_1: a young girl is a female child
explanation_2: Young barefoot girl is a female child, and walks down is a rephrasing of walks on top of.
explanation_3: If the girl is barefoot, she has no shoes on.
premise_logic: exists e4 e1 e2 e3 s1 s2 x1 x2 x3 x4 x5 x6 x7 x8.(down(e4,x8) & n_tree(x8) & Actor(e4,x1) & v_fall(e4) & Theme(e3,x4) & Actor(e3,x3) & v_wear(e3) & a_down(s2) & Manner(e2,s2) & Theme(e2,x6) & Actor(e2,x5) & v_walk(e2) & Theme(e1,x7) & v_cover(e1) & (x6 = x7) & n_mossy(x6) & (x4 = x5) & n_helmet(x4) & (x1 = x3) & n_girl(x1) & of(x1,x2) & n_barefoot(x2) & a_young(s1) & Theme(s1,x1))
hypothesis_logic: exists e1 e2 s1 s2 s3 x1 x2 x3 x4 x5 x6 x7.(on(e1,x5) & of(x5,x6) & a_down(s3) & Manner(e2,s3) & Actor(e2,x7) & v_fall(e2) & (x6 = x7) & n_tree(x6) & n_top(x5) & Actor(e1,x1) & v_walk(e1) & with(x1,x2) & subset_of(x3,x2) & Theme(s2,x4) & a_on(s2) & (x3 = x4) & n_helmet(x3) & -exists x8.(subset_of(x8,x2) & n_shoe(x8)) & n_child(x1) & a_female(s1) & Theme(s1,x1))