premise: A caucasian man wearing red plaid bottoms and a black vest with large buttons with a tattoo on one arm has an upside down unicycle balancing on his mouth.
hypothesis: A man is riding a unicycle.
explanation_1: If the man is balancing the unicycle on his mouth, he cannot be riding the unicycle.
explanation_2: A man cannot be balancing a unicycle  on his mouth and riding unicycle at the same time.
explanation_3: If the rider is balancing the unicycle on his mouth, it means he is not riding it.
premise_logic: exists e2 e3 e1 s1 s2 s3 s4 x1 x2 x3 x4 x5 x6 x7 x8 x9 x10 x11 x12 x13.(Theme(e3,x10) & Actor(e3,x1) & v_have(e3) & down(x10,x11) & on(e2,x13) & n_mouth(x13) & of(x13,x2) & n_male(x2) & Actor(e2,x12) & v_balance(e2) & (x11 = x12) & n_unicycle(x11) & n_upside(x10) & subset_of(x6,x1) & with(x6,x7) & with(x7,x8) & on(x8,x9) & n_arm(x9) & card_eq_1(x9) & n_tattoo(x8) & n_buttons(x7) & a_large(s4) & Theme(s4,x7) & n_vest(x6) & a_black(s3) & Theme(s3,x6) & subset_of(x2,x1) & Theme(e1,x4) & Actor(e1,x3) & v_wear(e1) & n_bottom(x4) & of(x4,x5) & n_plaid(x5) & a_red(s2) & Theme(s2,x4) & (x2 = x3) & n_man(x2) & a_caucasian(s1) & Theme(s1,x2))
hypothesis_logic: exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_unicycle(x2) & n_man(x1))