def METHOD_NAME(self, task, title):
    """Forget SeenEntry with :title:. Return True if forgotten."""
    se = task.session.query(db.SeenEntry).filter(db.SeenEntry.title == title).first()
    if se:
        logger.debug("Forgotten '{}' ({} fields)", title, len(se.fields))
        task.session.delete(se)
        return True