Men and women at an open-air market buying.
People are outside making purchases.
Being "outside making purchases" is exactly what being in an open-air market buying is.
exists s1 s2 x1 x2 x3 x4.(a_topic(s1) & subset_of(x2,s1) & at(x2,x3) & n_buying(x3) & of(x3,x4) & n_market(x4) & a_open-air(s2) & Theme(s2,x3) & n_woman(x2) & subset_of(x1,s1) & n_man(x1))
exists e1 s1 x1 x2.(for(s1,e1) & Theme(e1,x2) & Actor(e1,x1) & v_make(e1) & n_purchase(x2) & Theme(s1,x1) & a_outside(s1) & n_people(x1))