A hospital staff watching something.
Several nurses watch the monitors.
Just because a hospital staff watching something doesn't mean they are nurses.
exists e1 x1 x2 x3 x4.(a_topic(x1) & Theme(e1,x4) & Actor(e1,x3) & v_watch(e1) & n_thing(x4) & (x1 = x3) & n_staff(x1) & of(x1,x2) & n_hospital(x2))
exists e1 s1 x1 x2.(n_monitor(x2) & Theme(e1,x2) & Actor(e1,x1) & v_watch(e1) & n_nurse(x1) & a_several(s1) & Theme(s1,x1))