premise: A man is holding a book standing in front of a chalkboard.
hypothesis: A person is in a classroom teaching.
explanation_1: The person holding book standing in front if the chalkboard is teaching.
explanation_2: The person standing at the front of a classroom is generally understood to be teaching the class.
explanation_3: A man who is a person, is holding a book standing in front of a chalkboard which implies he is in a classroom environment ans possibly even the teacher.
premise_logic: exists e1 x1 x2 x3 x4 x5.(in(e1,x4) & of(x4,x5) & n_chalkboard(x5) & n_front(x4) & Theme(e1,x2) & Actor(e1,x1) & v_hold(e1) & n_standing(x2) & of(x2,x3) & n_book(x3) & n_man(x1))
hypothesis_logic: exists p1 x1.(exists x2 x3.(in(x1,x2) & n_teaching(x2) & of(x2,x3) & n_classroom(x3)) & n_person(x1))
premise_sim: exists e1 x1 x2 x3 x4 x5.(v_hold(e1) & of(x4,x5) & of(x2,x3) & n_standing(x2) & n_man(x1) & n_front(x4) & n_chalkboard(x5) & n_book(x3) & in(e1,x4) & Theme(e1,x2) & Actor(e1,x1))
hypothesis_sim: exists x1.(n_person(x1) & exists x2 x3.(of(x2,x3) & n_teaching(x2) & n_classroom(x3) & in(x1,x2)))