premise: A father is teaching his son how to ride a bicycle.
hypothesis: The father is teaching his daughter how to ride a bike.
explanation_1: It has to be his son or a daughter
explanation_2: The first sentence is about a father teaching his son to ride a bicycle and the second is about a father teaching a daughter.
explanation_3: The child cannot both be a son and a daughter
premise_logic: exists e1 p1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_teach(e1) & Topic(x2,p1) & exists e2 x3.(Theme(e2,x3) & Actor(e2,x2) & v_ride(e2) & n_bicycle(x3)) & n_son(x2) & of(x2,x1) & n_male(x1) & n_father(x1))
hypothesis_logic: exists e1 p1 x1 x2.(n_daughter(x2) & of(x2,x1) & n_male(x1) & n_father(x1) & Theme(e1,x2) & Actor(e1,x1) & v_teach(e1) & Topic(x2,p1) & exists e2 x3.(Theme(e2,x3) & Actor(e2,x2) & v_ride(e2) & n_bike(x3)))