data: updating subset with alt_ans field removed

feat: remove alt_ans field, as it creats too many problems

feat: removing test data

data: replacing alt_ans empty list with a list containing an empty string to prevent ingestion errors in HF and in load_datasets

feat: dealing with empty list in alt_ans field

fix: alt_ans

data: readding file

data: removing file

feat: updating README

feat: renaming output files and fixing a bug

feat: creating smaller subsets

feat: updated README

feat: converting CRAG sampler to a package for simpler install and use

chore: renaming files

Updated README

Added script to create subsamples

Renamed split into subsamples

Renamed files

Update README

Update README

renaming files

renaming files

Update README.md

Update README.md

Update README.md

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initial commit