A man balancing a ball on his arm.
The man is skiing down the hill on his new pair of skis.
It is not possible to be skiing down a hill while balancing a ball on one's arm.
exists e1 x1 x2 x3 x4.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_balance(e1) & on(x3,x4) & n_arm(x4) & of(x4,x1) & n_male(x1) & n_ball(x3) & (x1 = x2) & n_man(x1))
exists e1 s1 s2 x1 x2 x3 x4.(n_pair(x3) & a_new(s1) & Theme(s1,x3) & of(x3,x2) & n_male(x2) & n_hill(x2) & n_man(x1) & a_down(s2) & Manner(e1,s2) & Theme(e1,x2) & Actor(e1,x1) & v_ski(e1) & on(x2,x3) & of(x3,x4) & n_ski(x4))