premise: A young girl in a helmet walks barefoot across a mossy tree trunk that is lying over water.
hypothesis: A girl might fall off a tree.
explanation_1: Just because a girl walks barefoot on a tree trunk, it doesn't necessarily follow that she might fall off.
explanation_2: People wear helmets for reasons other than falling. Some helmets are worn for hazards that might fall from above.
explanation_3: There is no way to know if she will fall off the tree.
premise_logic: exists e2 e1 s1 x1 x2 x3 x4 x5 x6 x7 x8.(across(e1,x4) & over(e2,x8) & n_water(x8) & Actor(e2,x7) & v_lie(e2) & (x4 = x7) & n_trunk(x4) & of(x4,x6) & n_tree(x6) & of(x4,x5) & n_mossy(x5) & Theme(e1,x3) & Actor(e1,x1) & v_walk(e1) & n_barefoot(x3) & in(x1,x2) & n_helmet(x2) & n_girl(x1) & a_young(s1) & Theme(s1,x1))
hypothesis_logic: exists e1 p1 x1.(exists e2 s1 x2.(n_tree(x2) & Time(e2,x2) & a_off(s1) & Manner(e2,s1) & Actor(e2,x1) & v_fall(e2)) & Topic(e1,p1) & Actor(e1,x1) & v_might(e1) & n_girl(x1))