A musician playing a stage lit in red sings into a microphone.
A musician is singing.
If a musician sings into a microphone, they are singing.
exists e1 s1 x1 x2 x3 x4 x5 x6.(a_topic(x1) & into(e1,x6) & n_microphone(x6) & in(e1,x5) & n_sing(x5) & a_red(s1) & Theme(s1,x5) & Theme(e1,x3) & Actor(e1,x2) & v_play(e1) & n_lit(x3) & of(x3,x4) & n_stage(x4) & (x1 = x2) & n_musician(x1))
exists e1 x1.(Actor(e1,x1) & v_sing(e1) & n_musician(x1))