premise: A dark-skinned man in white shirts and a black sleeveless shirt flips his skateboard on a cement surface surrounded by tall buildings and palm trees.
hypothesis: a man flips his skateboard on a cement surface
explanation_1: dark-skinned man flips his skateboard   is the same as man flips his skateboard
explanation_2: A man (dark-skinned) flips his skateboard on a cement surface as part of man's description surrounded by tall buildings and palm trees.
explanation_3: The person is a man because he is a dark-skinned man.
premise_logic: exists e2 e1 s1 s2 s3 s4 s5 x1 x2 x3 x4 x5 x6 x7 x8 x9 x10 x11 x12.(Theme(e2,x5) & Actor(e2,x1) & v_flip(e2) & on(x5,x6) & Actor(e1,x9) & n_tree(x11) & of(x11,x12) & n_palm(x12) & n_building(x10) & subset_of(x11,x9) & subset_of(x10,x9) & a_tall(s5) & Theme(s5,x9) & Theme(e1,x8) & v_surround(e1) & (x6 = x8) & n_surface(x6) & of(x6,x7) & n_cement(x7) & n_skateboard(x5) & of(x5,x2) & n_male(x2) & subset_of(x4,x1) & n_shirt(x4) & a_sleeveless(s4) & Theme(s4,x4) & a_black(s3) & Theme(s3,x4) & subset_of(x2,x1) & in(x2,x3) & n_shirt(x3) & a_white(s2) & Theme(s2,x3) & n_man(x2) & a_dark-skinned(s1) & Theme(s1,x2))
hypothesis_logic: exists e1 x1 x2 x3 x4.(Theme(e1,x2) & Actor(e1,x1) & v_flip(e1) & on(x2,x3) & n_surface(x3) & of(x3,x4) & n_cement(x4) & n_skateboard(x2) & of(x2,x1) & n_male(x1) & n_man(x1))