A security guard on watch duty at the museum.
the museum is closed
You can't be on watch at the museum while it is closed.
exists x1 x2 x3 x4 x5.(n_museum(x5) & a_topic(x1) & on(x1,x3) & at(x3,x5) & n_duty(x3) & of(x3,x4) & n_watch(x4) & n_guard(x1) & of(x1,x2) & n_security(x2))
exists e1 x1.(n_museum(x1) & Theme(e1,x1) & v_close(e1))