premise: A nun is taking a picture outside.
hypothesis: A man is taking a picture outside.
explanation_1: A nun is typically a woman, not a man.
explanation_2: There can either be a nun or a man.
explanation_3: Contradiction:  man or nun ... mutually exclusive
premise_logic: exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_take(e1) & n_outside(x2) & of(x2,x3) & n_picture(x3) & n_nun(x1))
hypothesis_logic: exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_take(e1) & n_outside(x2) & of(x2,x3) & n_picture(x3) & n_man(x1))