added README.md

added dataset_info.json

added script nq.py

added dataset_dict.json

added train dataset_info.json and state.json

added train dataset.arrow.15~19.gz

added train dataset.arrow.10~14.gz

added train dataset.arrow.05~09.gz

added train dataset.arrow.00~04.gz

added validation set

remove validation folder which has the wrong file names

delete files which were used for testing

add validation folder

dataset.arrow.00 for NQ validation

state.json for NQ validation set

dataset_info.json for NQ validation

initial commit