Answer:
It is the assumed nocturnal symbol of Mr. Wayne. What is it?
What has roots that nobody sees, and is taller than trees. Up, up it goes, and yet it never grows.
What grows in winter, dies in summer, and grows roots upward?
What force and strength cannot get through. I, with a gentle touch, can do. Many in the street would stand. Were I not a friend at hand.
It is able to speak because it has a hard gone. You know what it is as soon as it has sung. What is it?
What language does a billboard speak?