text: number for J.S. Bach.    Action: ItemLookup    Action Input: J.S. Bach        Observation:Q1339I need to find the P number for children.    Action: PropertyLookup    Action Input: children        Observation:P1971Now I can query the number of children J.S. Bach had.    Action: SparqlQueryRunner    Action Input: SELECT ?children WHERE { wd:Q1339 wdt:P1971 ?children }        Observation:[{"children": {"datatype": "http://www.w3.org/2001/XMLSchema#decimal", "type": "literal", "value": "20"}}]I now know the final answer.    Final Answer: J.S. Bach had 20 children.        > Finished chain.    'J.S. Bach had 20 children.'agent_executor.run(    "What is the Basketball-Reference.com NBA player ID of Hakeem Olajuwon?")            > Entering new AgentExecutor chain...    Thought: To find Hakeem Olajuwon's Basketball-Reference.com NBA player ID, I need to first find his Wikidata item (Q-number) and then query for the relevant property (P-number).    Action: ItemLookup    Action Input: Hakeem Olajuwon        Observation:Q273256Now that I have Hakeem Olajuwon's Wikidata item (Q273256), I need to find the P-number for the Basketball-Reference.com NBA player ID property.    Action: PropertyLookup    Action Input: Basketball-Reference.com NBA player ID