from typing import Dict, Any, Optional, List, Tuple


def build_humanitarian_knowledge_graph(
    entities: List[Dict[str, Any]],
    relations: List[Tuple[str, str, str]],
    schema: Optional[Dict[str, Any]] = None,
    export_format: str = "graphml"
) -> Dict[str, Any]:
    """
    Build humanitarian knowledge graph — placeholder intent

    Parameters
    ----------
    entities : list[dict]
        Nodes with attributes, e.g., {"id":"org1","type":"ORG","name":"WFP"}
    relations : list[tuple[str,str,str]]
        Triples (source_id, relation_type, target_id)
    schema : dict | None
        Optional node/edge schema and constraints
    export_format : str
        "graphml" | "gexf" | "json"
    """
    return {
        "type": "doc_build_knowledge_graph",
        "counts": {"entities": len(entities), "relations": len(relations)},
        "export_format": export_format,
        "schema": schema or {},
        "preview": {"will_construct_graph": True}
    }
