premise: The streets are busy and people contemplate their futures.
hypothesis: The streets are busy.
explanation_1: The people contemplate their futures because the streets are busy by the traffics it will lead to air pollution.
explanation_2: All of sentence 2 ( the streets are busy ) appears at the beginning of sentence 1.
explanation_3: The busy streets are filled with people.
premise_logic: exists e1 s1 x1 x2 x3.(n_future(x3) & of(x3,x1) & n_thing(x1) & n_street(x1) & Theme(e1,x3) & Actor(e1,x2) & v_contemplate(e1) & n_people(x2) & Theme(s1,x1) & a_busy(s1))
hypothesis_logic: exists s1 x1.(n_street(x1) & Theme(s1,x1) & a_busy(s1))