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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 _get_content(data, which_content):
 """ get the content that could be hidden in the middle of "content" or "summary detail" from the data of the provider """

        content = ''
        if data.get(which_content):
            if isinstance(data.get(which_content), feedparser.FeedParserDict):
                content = data.get(which_content)['value']
            elif not isinstance(data.get(which_content), str):
                if 'value' in data.get(which_content)[0]:
                    content = data.get(which_content)[0].value
            else:
                content = data.get(which_content)
        return content