How to join two datasets?
Hi this is also my question. thanks  Hi ! Currently the only way to add new fields to a dataset is by using `.map` and picking items from the other dataset
 Closing this one. Feel free to re-open if you have other questions about this issue.

Also linking another discussion about joining datasets: #853 
Hi,

I'm wondering if it's possible to join two (preprocessed) datasets with the same number of rows but different labels? 

I'm currently trying to create paired sentences for BERT from `wikipedia/'20200501.en`, and I couldn't figure out a way to create a paired sentence using `.map()` where the second sentence is **not** the next sentence (i.e., from a different article) of the first sentence.

Thanks!