premise: A skateboarder is performing a grab trick while hovering above a ramp, which is located within a city.
hypothesis: A skateboarder is at a skatepark with his friends showing off his moves.
explanation_1: The skateboarder could have been by a boat ramp by himself instead of at a skatepark with his friends.
explanation_2: Just because the skateboarder is in the city with his friends does not mean he is at a skatepark.
explanation_3: Just because a skateboarder is performing a grab trick while hovering above a ramp, which is located within a city does not mean they are at a skatepark with his friends.
premise_logic: exists e3 e2 e1 x1 x2 x3 x4 x5 x6.(while(e1,e2) & above(e2,x4) & within(e3,x6) & n_city(x6) & Theme(e3,x5) & v_locate(e3) & (x4 = x5) & n_ramp(x4) & Actor(e2,x1) & v_hover(e2) & Theme(e1,x2) & Actor(e1,x1) & v_perform(e1) & n_trick(x2) & of(x2,x3) & n_grab(x3) & n_skateboarder(x1))
hypothesis_logic: exists p1 x1 x3 x5.(exists e1 s1 x1 x2 x4.(at(x1,x2) & with(x2,x3) & a_off(s1) & Manner(e1,s1) & Theme(e1,x5) & Actor(e1,x4) & v_show(e1) & n_male(x1) & (x3 = x4) & n_skatepark(x2)) & n_move(x5) & of(x5,x1) & n_friend(x3) & of(x3,x1) & n_male(x1) & n_skateboarder(x1))
premise_sim: exists e3 e2 e1 x1 x2 x3 x4 x5 x6.(within(e3,x6) & while(e1,e2) & v_perform(e1) & v_locate(e3) & v_hover(e2) & of(x2,x3) & n_trick(x2) & n_skateboarder(x1) & n_ramp(x4) & n_grab(x3) & n_city(x6) & above(e2,x4) & Theme(e3,x5) & Theme(e1,x2) & Actor(e2,x1) & Actor(e1,x1) & (x4 = x5))
hypothesis_sim: exists x1 x3 x5.(of(x5,x1) & of(x3,x1) & n_skateboarder(x1) & n_move(x5) & n_male(x1) & n_friend(x3) & exists e1 s1 x1 x2 x4.(with(x2,x3) & v_show(e1) & n_skatepark(x2) & n_male(x1) & at(x1,x2) & a_off(s1) & Theme(e1,x5) & Manner(e1,s1) & Actor(e1,x4) & (x3 = x4)))