premise: A man, boy and a white dog are looking at a display of postcards.
hypothesis: A man has his boy and his dog out enjoying time spent together while shopping.
explanation_1: Only because persons are looking at a display of postcards doesn't necessary imply they are shopping.
explanation_2: Looking at postcards does not imply shopping and without 'his' denoting ownership the three could have been strangers.
explanation_3: Not all looking at a display of postcards do shopping.
premise_logic: exists e1 s1 s2 x1 x2 x3 x4 x5 x6.(at(e1,x5) & of(x5,x6) & n_postcard(x6) & n_display(x5) & Actor(e1,x1) & v_look(e1) & subset_of(x4,x1) & n_dog(x4) & a_white(s2) & Theme(s2,x4) & subset_of(x2,x1) & n_boy(x2) & a_,(s1) & Theme(s1,x2) & of(x2,x3) & n_man(x3))
hypothesis_logic: exists e3 e2 e1 s1 s2 x1 x2 x3 x4 x5 x6 x7.(for(e1,e3) & Theme(e3,x5) & Actor(e3,x1) & v_enjoy(e3) & while(e2,x7) & n_shopping(x7) & a_together(s2) & Manner(e2,s2) & Theme(e2,x6) & v_spend(e2) & (x5 = x6) & n_time(x5) & a_out(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & subset_of(x4,x2) & n_dog(x4) & of(x4,x1) & n_male(x1) & n_male(x1) & subset_of(x3,x2) & n_boy(x3) & of(x3,x1) & n_man(x1))