premise: A young man is riding a dirt bike while standing up.
hypothesis: A young man takes a helicopter to work.
explanation_1: The man cannot simultaneously be riding a bike and take a helicopter
explanation_2: You can not ride a dirt bike and a helicopter simultaneously.
explanation_3: A young man can't be riding a dirt bike and a helicopter at the same time.
premise_logic: exists e2 e1 s1 s2 x1 x2 x3.(while(e1,e2) & a_up(s2) & Manner(e2,s2) & Actor(e2,x1) & v_stand(e2) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_bike(x2) & of(x2,x3) & n_dirt(x3) & n_man(x1) & a_young(s1) & Theme(s1,x1))
hypothesis_logic: exists e1 p1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_take(e1) & Topic(x2,p1) & exists e2.(Actor(e2,x2) & v_work(e2)) & n_helicopter(x2) & n_man(x1) & a_young(s1) & Theme(s1,x1))