premise: A man in a black and blue jacket and a white helmet skiing down a hill swiftly.
hypothesis: A man skiing down a hill.
explanation_1: Man in a black and blue jacket is a type of man, and skiing down a hill swiftly is a rephrasing of skiing down a hill.
explanation_2: If he is skiing down a hill swiftly, he is skiing down the hill.
explanation_3: The man is swiftly skiing down a hill.
premise_logic: exists s1 s2 s3 x1 x2 x3 x4 x5 x6.(a_topic(x3) & swiftly(x3,x4) & down(x4,x6) & n_hill(x6) & n_skiing(x4) & of(x4,x5) & n_helmet(x5) & a_white(s3) & Theme(s3,x4) & n_man(x3) & a_topic(x1) & in(x1,x2) & n_jacket(x2) & a_blue(s2) & Theme(s2,x2) & a_black(s1) & Theme(s1,x2) & n_man(x1))
hypothesis_logic: exists x1 x2 x3.(a_topic(x1) & down(x1,x3) & n_hill(x3) & n_skiing(x1) & of(x1,x2) & n_man(x2))