premise: A policeman is sitting in a van looking out the window.
hypothesis: The policeman is sitting.
explanation_1: A policeman is in a van and therefor he is sitting.
explanation_2: If a policeman is in a van, he is most likely sitting.
explanation_3: Both policeman are sitting on something.
premise_logic: exists e2 e1 s1 x1 x2 x3.(n_window(x3) & for(e1,e2) & Time(e2,x3) & a_out(s1) & Manner(e2,s1) & Actor(e2,x1) & v_look(e2) & in(e1,x2) & n_van(x2) & Actor(e1,x1) & v_sit(e1) & n_policeman(x1))
hypothesis_logic: exists e1 x1.(n_policeman(x1) & Actor(e1,x1) & v_sit(e1))
premise_sim: exists e2 e1 s1 x1 x2 x3.(v_sit(e1) & v_look(e2) & n_window(x3) & n_van(x2) & n_policeman(x1) & in(e1,x2) & for(e1,e2) & a_out(s1) & Time(e2,x3) & Manner(e2,s1) & Actor(e2,x1) & Actor(e1,x1))
hypothesis_sim: exists e1 x1.(v_sit(e1) & n_policeman(x1) & Actor(e1,x1))