Two feet wearing yellow ski boots on ski
A person is learning how to ski downhill.
A person wearing skis might not be learning how to ski downhill.  They could already know to ski. They could be learning cross-country skiing. They could be posing for a picture and are not even outside.
exists e1 s1 x1 x2 x3 x4 x5.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & on(x3,x5) & n_ski(x5) & n_boot(x3) & of(x3,x4) & n_ski(x4) & a_yellow(s1) & Theme(s1,x3) & (x1 = x2) & n_foot(x1) & card_eq_2(x1))
exists e1 x1 x2.(Topic(e1,x2) & Actor(e1,x1) & v_learn(e1) & n_manner(x2) & exists e2 x3 x4.(Theme(e2,x4) & Actor(e2,x3) & v_ski(e2) & n_downhill(x4)) & n_person(x1))