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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 NCBISequenceLink(title, default=None):
 """ Given a sequence title, like "gi|42768646|gb|AY516849.1| Homo sapiens", return an HTML A tag dispalying a link to the info page at NCBI. title: the sequence title to produce an HTML link for. default: the value to return if the title cannot be parsed. """

    url = NCBISequenceLinkURL(title)
    if url is None:
        return default
    else:
        return '<a href="%s" target="_blank">%s</a>' % (url, title)