Two nurses laughing over a container.
Nurses performing CPR on patient.
Nurses cannot be laughing over a container or performing CPR on a patient simultaneously.
exists e1 x1 x2 x3.(a_topic(x1) & over(e1,x3) & n_container(x3) & Actor(e1,x2) & v_laugh(e1) & (x1 = x2) & n_nurse(x1) & card_eq_2(x1))
exists e1 x1 x2 x3 x4.(ne_org_cpr(x3) & a_topic(x1) & on(e1,x4) & n_patient(x4) & Theme(e1,x3) & Actor(e1,x2) & v_perform(e1) & (x1 = x2) & n_nurse(x1))