premise: Some young boys ride bikes in the street.
hypothesis: There are girls and boys
explanation_1: Boys are not girls.
explanation_2: There are boys and girls.
explanation_3: There are either boys, or girls, or both.
premise_logic: exists e1 s1 x1 x2 x3.(n_street(x3) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & in(x2,x3) & n_bike(x2) & n_boy(x1) & a_young(s1) & Theme(s1,x1))
hypothesis_logic: exists p1 x1 x2 x3 x4.((x1 = x2) & subset_of(x4,x2) & n_boy(x4) & subset_of(x3,x2) & n_girl(x3))