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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def verb(**kwargs):
 """Create OAI-PMH envelope for response with verb."""

    e_tree, e_oaipmh = envelope(**kwargs)
    e_element = SubElement(e_oaipmh, etree.QName(NS_OAIPMH, kwargs['verb']))
    return e_tree, e_element