A nurse in a blue shirt and a purple shirt talking.
There are two people talking.
the act of talking suggests there is more than one person, hence two people talking
exists e1 s1 s2 s3 x1 x2 x3 x4.(a_topic(s1) & subset_of(x3,s1) & Actor(e1,x4) & v_talking(e1) & (x3 = x4) & n_shirt(x3) & a_purple(s3) & Theme(s3,x3) & subset_of(x1,s1) & in(x1,x2) & n_shirt(x2) & a_blue(s2) & Theme(s2,x2) & n_nurse(x1))
exists p1 x1 e1 x2 x3.((x1 = x2) & Actor(e1,x3) & v_talk(e1) & (x2 = x3) & n_people(x2) & card_eq_2(x2))