premise: A teen doing a skateboard trick in front of a building.
hypothesis: The boy is practicing skateboard tricks in the yard.
explanation_1: The teen may not be a boy. He or she may not be practicing the skateboard trick and may have already perfected it. There is no indication he or she is doing more than one trick. Just because the teen is in front of a building does not mean he or she is in a yard.
premise_logic: exists e1 x1 x2 x3 x4 x5 x6.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_do(e1) & in(x3,x5) & of(x5,x6) & n_building(x6) & n_front(x5) & n_trick(x3) & of(x3,x4) & n_skateboard(x4) & (x1 = x2) & n_teen(x1))
hypothesis_logic: exists e1 x1 x2 x3 x4.(n_yard(x4) & n_boy(x1) & in(e1,x4) & Theme(e1,x2) & Actor(e1,x1) & v_practice(e1) & n_trick(x2) & of(x2,x3) & n_skateboard(x3))
premise_sim: exists e1 x1 x2 x3 x4 x5 x6.(v_do(e1) & of(x5,x6) & of(x3,x4) & n_trick(x3) & n_teen(x1) & n_skateboard(x4) & n_front(x5) & n_building(x6) & in(x3,x5) & a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & (x1 = x2))
hypothesis_sim: exists e1 x1 x2 x3 x4.(v_practice(e1) & of(x2,x3) & n_yard(x4) & n_trick(x2) & n_skateboard(x3) & n_boy(x1) & in(e1,x4) & Theme(e1,x2) & Actor(e1,x1))