premise: A man is swimming with a little girl wearing a pink life jacket in an indoor pool
hypothesis: A man is teaching his granddaughter to swim.
explanation_1: It is not implied that it is his granddaughter who  is  being taught to swim.
explanation_2: Just because the man is swimming with a little girl does not mean he is teaching her to swim.
explanation_3: The granddaughter could have been the man's daughter, or sister.
premise_logic: exists e2 e1 s1 s2 s3 x1 x2 x3 x4 x5 x6.(with(e1,x2) & Theme(e2,x4) & Actor(e2,x3) & v_wear(e2) & in(x4,x6) & n_pool(x6) & a_indoor(s3) & Theme(s3,x6) & n_jacket(x4) & of(x4,x5) & n_life(x5) & a_pink(s2) & Theme(s2,x4) & (x2 = x3) & n_girl(x2) & a_little(s1) & Theme(s1,x2) & Actor(e1,x1) & v_swim(e1) & n_man(x1))
hypothesis_logic: exists e1 p1 x1 x2 x3.(Topic(e1,p1) & exists e2.(Actor(e2,x1) & v_swim(e2)) & Theme(e1,x3) & Actor(e1,x2) & v_teach(e1) & n_granddaughter(x3) & of(x3,x1) & n_male(x1) & n_man(x2) & n_man(x1))