premise: A man in gray slacks and sweater observes marker placed in front of a fence in a field.
hypothesis: The man is old.
explanation_1: Not all men are old.
explanation_2: Not all the people who are wearing gray slacks and sweater are old.
explanation_3: The man may not be old.
premise_logic: exists e2 e1 s1 x1 x2 x3 x4 x5 x6 x7 x8 x9.(Theme(e2,x5) & Actor(e2,x1) & v_observe(e2) & in(e1,x9) & n_field(x9) & in(e1,x7) & of(x7,x8) & n_fence(x8) & n_front(x7) & Theme(e1,x6) & v_place(e1) & (x5 = x6) & n_marker(x5) & in(x1,x2) & n_sweater(x4) & n_slacks(x3) & a_gray(s1) & Theme(s1,x3) & subset_of(x4,x2) & subset_of(x3,x2) & n_man(x1))
hypothesis_logic: exists s1 x1.(n_man(x1) & Theme(s1,x1) & a_old(s1))