Retrieve a passage and information about it

        :param urn: URN identifying the text's passage (Minimum depth : 1)
        :type urn: text
        :param inventory: Name of the inventory
        :type inventory: text
        :param context: Number of citation units at the same level of the citation hierarchy as the requested urn, immediately preceding and immediately following the requested urn to include in the reply
        :type context: int
        :rtype: str

def getPassagePlus(self, urn, inventory=None, context=None):
        """ Retrieve a passage and information about it

        :param urn: URN identifying the text's passage (Minimum depth : 1)
        :type urn: text
        :param inventory: Name of the inventory
        :type inventory: text
        :param context: Number of citation units at the same level of the citation hierarchy as the requested urn, immediately preceding and immediately following the requested urn to include in the reply
        :type context: int
        :rtype: str
        """
        return self.call({
            "inv": inventory,
            "urn": urn,
            "context": context,
            "request": "GetPassagePlus"
        })