Public Dataset Archive 21

High quality verifiable public dataset #28 tailored for machine learning pre-training loops.

High quality verifiable public dataset #33 tailored for machine learning pre-training loops.

High quality verifiable public dataset #42 tailored for machine learning pre-training loops.

High quality verifiable public dataset #47 tailored for machine learning pre-training loops.

High quality verifiable public dataset #50 tailored for machine learning pre-training loops.