A three-man band performs.
The band is sleep.
The band is either sleep or performs.
exists s1 x1 x2.(a_topic(x1) & n_perform(x1) & of(x1,x2) & n_band(x2) & a_three-man(s1) & Theme(s1,x1))
exists p1 x1.(n_band(x1) & exists x2.((x1 = x2) & n_sleep(x2)))