如何使用SPARQL从Wikidata获取值的单位？

SELECT ?unitLabel WHERE {
  wd:QID p:PID ?statement.
  ?statement ps:PID ?value.
  ?statement pq:P1114 ?unit.
  SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }
}

from SPARQLWrapper import SPARQLWrapper, JSON

def get_unit_from_wikidata(qid, pid):
    endpoint_url = "https://query.wikidata.org/sparql"
    query = """
    SELECT ?unitLabel WHERE {
      wd:%s p:%s ?statement.
      ?statement ps:%s ?value.
      ?statement pq:P1114 ?unit.
      SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }
    }
    """ % (qid, pid, pid)

    sparql = SPARQLWrapper(endpoint_url)
    sparql.setQuery(query)
    sparql.setReturnFormat(JSON)
    results = sparql.query().convert()

    units = []
    for result in results["results"]["bindings"]:
        units.append(result["unitLabel"]["value"])

    return units

# 调用函数并传入要查询的实体和属性的标识符
units = get_unit_from_wikidata("Q42", "P2048")
print(units)