ner_tags: O O O O B-Database I-Database I-Database B-Database O O O O O B-Organization I-Organization I-Organization B-Organization O O O B-Organization O O O O O O O O
tokens: ACKNOWLEDGEMENTS We used the NASA/IPAC Extragalactic Database (NED), which is operated by the Jet Propulsion Laboratory, Caltech, under contract with NASA. We acknowledge useful comments by an anonymous referee.