def addN(self, quads: Tuple[Node, Node, Node, Any]) -> "QuotedGraph":  # type: ignore[override]
        """Add a sequence of triple with context"""

        self.store.addN(
            (s, p, o, c)
            for s, p, o, c in quads
            if isinstance(c, QuotedGraph)
            and c.identifier is self.identifier
            and _assertnode(s, p, o)
        )
        return self