This is the preprocessed training data from msmarco passage(v1) ranking corpus.
MS MARCO: A human generated MAchine Reading COmprehension dataset SPayal Bajaj, Daniel Campos, Nick Craswell, Li Deng, Jianfeng Gao, Xiaodong Liu, Rangan Majumder, Andrew McNamara, Bhaskar Mitra, Tri Nguyen,.