Thanks to the Japan Science and Technology Agency (JST) PRESTO Sakigake program in the research area Synthesis of Knowledge for Information Oriented Society (Awardee; Alastair Butler, 2010–2014) for supporting the initial design. Subsequent funding from an NTT (Linguistic Intelligence Research Group) agreement with Kei Yoshimoto and Alastair Butler dated 2014/06/24 sustained annotation through to 2016.
From 2016/04/01 until 2022/03/31 work continued under the Development of and Linguistic Research with a Parsed Corpus of Japanese (NINJAL Parsed Corpus of Modern Japanese/NPCMJ) internal project of the National Institute for Japanese Language and Linguistics (NINJAL) (Project Leader: Prashant Pardeshi).