Составьте специальный вопрос: I think the bird which is singing over there is beautiful.

I think the bird which is singing over there is beautiful.

What is beautiful?

Which bird is beautiful?

What is singing?

What is over there?

What is the bird doing?

What do I think about the bird which is singing over there?

Where is the bird which is singing?

Who thinks the bird which is singing over there is beautiful?