def active(self, subject_id, entity_id):
        """ Returns the status of assertions from a specific entity_id.

        :param subject_id: The ID of the subject
        :param entity_id: The entity ID of the entity_id of the assertion
        :return: True or False depending on if the assertion is still
            valid or not.
        """

        item = self._cache.find_one({"subject_id": subject_id,
                                     "entity_id": entity_id})
        try:
            return time_util.not_on_or_after(item["timestamp"])
        except ToOld:
            return False
Returns the status of assertions from a specific entity_id.

        :param subject_id: The ID of the subject
        :param entity_id: The entity ID of the entity_id of the assertion
        :return: True or False depending on if the assertion is still
            valid or not.