A nurse in a blue shirt and a purple shirt talking.
A nurse in a blue shirt is talking about a patient to another nurse wearing a purple shirt.
It cannot be inferred that there are two nurses or that they are talking about a patient.
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 e1 e2 s1 s2 x1 x2 x3 x4 x5 x6.(about(e1,x3) & to(x3,x4) & Theme(e2,x6) & Actor(e2,x5) & v_wear(e2) & n_shirt(x6) & a_purple(s2) & Theme(s2,x6) & (x4 = x5) & n_nurse(x4) & -(x4 = x1) & n_nurse(x1) & n_nurse(x1) & n_patient(x3) & Actor(e1,x1) & v_talk(e1) & in(x1,x2) & n_shirt(x2) & a_blue(s1) & Theme(s1,x2))