An orchestra playing on a dimly lit stage being led by a conductor.
The conductor is skilled
Not all conductotrs are skilled.
exists e1 s1 x1 x2 x3 x4 x5.(a_topic(x1) & on(x1,x3) & Actor(e1,x5) & n_conductor(x5) & Theme(e1,x4) & v_lead(e1) & (x3 = x4) & n_stage(x3) & a_lit(s1) & Theme(s1,x3) & r_dimly(x3) & n_playing(x1) & of(x1,x2) & n_orchestra(x2))
exists e1 x1.(n_conductor(x1) & Theme(e1,x1) & v_skill(e1))