Here are some information about Embedded Questions for you.
An embedded question is a question contained within a statement or a question.
Where is the library?
Above is a regular question in which the word order is verb and then subject.
I don't know where the library is.
Do you know where the library is?
The examples above show embedded questions.
The word order is subject and then verb.
Notice that the first one is not a real question,
but a statement.
Source : http://www.learnamericanenglishonline.com
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