Question: JSON structure

[youngj98]

Hello

Thank you for good research!!

I wonder what means words (C, con_up, con_down, cluster, layer) in JSON file.

In v1_1_train_nus.json, words (C, con_up, con_down, cluster, layer) are "null", Is it have any reaseon?

------ v1_1_train_nus.json ------

------ drivelm_carla_vqas ------