ner_tags: O O O O O O O O O O O O B-Organization B-Grant I-Grant I-Grant I-Grant O O O B-Person I-Person O B-Person I-Person O O O O O O O O O O
tokens: We appreciate the anonymous referee’s valuable comments. This work was supported by JSPS KAKENHI grant No. 18K18774. The authors thank Akio Inoue and Tohru Nagao for suggestions on metallicity and the dust-to-gas ratio in AGNs.