premise: A man is standing on a rooftop looking at his camera.
hypothesis: A man is taking pictures on top of a roof.
explanation_1: A man looking at his camera does not imply that he is taking pictures.
explanation_2: he can simply stand there without taking pictures
explanation_3: Just because a man is standing on a rooftop looking at his camera does not mean he is taking pictures.
premise_logic: exists e1 e2 x1 x2 x3.(for(e1,e2) & at(e2,x3) & n_camera(x3) & of(x3,x1) & n_male(x1) & Actor(e2,x1) & v_look(e2) & on(e1,x2) & n_rooftop(x2) & Actor(e1,x1) & v_stand(e1) & n_man(x1))
hypothesis_logic: exists e1 x1 x2 x3 x4.(on(e1,x3) & of(x3,x4) & n_roof(x4) & n_top(x3) & Theme(e1,x2) & Actor(e1,x1) & v_take(e1) & n_picture(x2) & n_man(x1))