premise: A snow activity enthusiast flips around on a snowy mountain.
hypothesis: A lone child makes a snow angel in the snow
explanation_1: The subject either flips around or makes a snow angel.
explanation_2: We can't say for certain if the snow activity enthusiast is a child. Making a snow angel is not flipping down a mountain.
explanation_3: Flipping around and making a snow angel are not simultaneous activity as one involves slow repeated action and the other is more intense and spontaneous.
premise_logic: exists e1 s1 s2 x1 x2 x3 x4.(a_around(s2) & Manner(e1,s2) & on(e1,x4) & n_mountain(x4) & a_snowy(s1) & Theme(s1,x4) & Actor(e1,x1) & v_flip(e1) & n_enthusiast(x1) & of(x1,x3) & n_activity(x3) & of(x1,x2) & n_snow(x2))
hypothesis_logic: exists e1 s1 x1 x2 x3.(in(e1,x3) & n_snow(x3) & n_snow(x3) & Theme(e1,x2) & Actor(e1,x1) & v_make(e1) & n_angel(x2) & of(x2,x3) & n_child(x1) & a_lone(s1) & Theme(s1,x1))