premise: A skilled calligrapher is working at his art.
hypothesis: the calligrapher is blind and crazy and not skilled
explanation_1: The calligrapher is either skilled or not.
explanation_2: Skilled and not killed are opposite descriptions of the same person. One has to be one or the other.
explanation_3: If the calligrapher is not skilled then they cannot be a skilled calligrapher working at his art.
premise_logic: exists e1 s1 x1 x2.(at(e1,x2) & n_art(x2) & of(x2,x1) & n_male(x1) & Actor(e1,x1) & v_work(e1) & n_calligrapher(x1) & a_skilled(s1) & Theme(s1,x1))
hypothesis_logic: exists s1 s2 x1.(n_calligrapher(x1) & -exists s3.(Theme(s3,x1) & a_skilled(s3)) & Theme(s2,x1) & a_crazy(s2) & Theme(s1,x1) & a_blind(s1))