premise: A person sweeping stairs in a park.
hypothesis: A person outside.
explanation_1: In a park implies outside.
explanation_2: If a person is in a park they must be outside.
explanation_3: A park is outside.
premise_logic: exists x1 x2 x3.(a_topic(x1) & in(x1,x3) & n_park(x3) & n_sweeping(x1) & Time(x1,x2) & n_stair(x2) & n_person(x1))
hypothesis_logic: exists s1 x1 x2.(a_topic(x1) & Theme(s1,x2) & a_outside(s1) & (x1 = x2) & n_person(x1))