@retry(stop=stop_after_attempt(3), wait=wait_exponential(multiplier=1, min=4, max=10))
def identify_relationships(self, structure: str, node_definitions: Dict) -> List[Tuple]:
    """Identify relationships with retry logic."""
    try:
        response = self.chain.invoke({
            "structure": structure, 
            "node_definitions": str(node_definitions), 
            "example": str(self.RELATIONSHIP_EXAMPLE)
        })

        relationships = ast.literal_eval(response)

        if not self.validate_relationships(relationships):
            raise ValueError("Invalid relationship structure")

        self.logger.info(f"Identified {len(relationships)} relationships")
        return relationships