Use Open task train, valid dataset

If read the task rule, it is described as follows.

You are welcome to use whatever training data you like, provided you adhere to all other competition rules, and:
Any existing data marked as test may not be used for training.

Can we use the train and valid datasets from DCASE, Nsynth, and Google Speech Commands for 3 open tasks? (except test set)

@SeungHeonDoh yes you may use the train and valid sets from all the open tasks for training your model, just not anything marked as test.