premise: A man sitting on the back of a truck underneath an umbrella.
hypothesis: A man is sitting outside in the rain.
explanation_1: There is no mention of the location of the truck or the weather so one cannot assume it is located outside nor can one assume it is raining.
premise_logic: exists e1 x1 x2 x3 x4 x5.(n_back(x3) & a_topic(x1) & on(e1,x3) & of(x3,x4) & underneath(x4,x5) & n_umbrella(x5) & n_truck(x4) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_man(x1))
hypothesis_logic: exists e1 p1 x1 x2.(n_rain(x2) & in(e1,x2) & exists s1.(Theme(s1,x1) & a_outside(s1)) & Topic(e1,p1) & Actor(e1,x1) & v_sit(e1) & n_man(x1))
premise_sim: exists e1 x1 x2 x3 x4 x5.(v_sit(e1) & underneath(x4,x5) & on(e1,x3) & of(x3,x4) & n_umbrella(x5) & n_truck(x4) & n_man(x1) & n_back(x3) & a_topic(x1) & Actor(e1,x2) & (x1 = x2))
hypothesis_sim: exists e1 p1 x1 x2.(v_sit(e1) & n_rain(x2) & n_man(x1) & in(e1,x2) & exists s1.(a_outside(s1) & Theme(s1,x1)) & Topic(e1,p1) & Actor(e1,x1))