Two people wearing yellow jackets crosscountry skiing.
The skiers are an old married couple.
Two people are not necessarily an old married couple.
exists e1 s1 s2 x1 x2 x3 x4.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_skiing(x3) & a_crosscountry(s2) & Theme(s2,x3) & of(x3,x4) & n_jacket(x4) & a_yellow(s1) & Theme(s1,x3) & (x1 = x2) & n_people(x1) & card_eq_2(x1))
exists p1 x1.(n_skier(x1) & exists s1 s2 x2.((x1 = x2) & n_couple(x2) & a_married(s2) & Theme(s2,x2) & a_old(s1) & Theme(s1,x2)))