Definition: Given a passage and a question, find the answer to the question based on the passage. The answer should consist of only one word that lies in the span of only one of the sentences in the passage.
Input: Paragraph: Article I , Section 8 , Clause 7 of the United States Constitution , known as the Postal Clause or the Postal Power , empowers Congress '' To establish Post Offices and post Roads '' .
Question: who has the power to create post offices

Output:
Congress