Collect example datasets from existing public collections

[mekline]

An eventual goal for the example datasets is an array of subject-specific examples for researchers to look at and modify. E.g. two aggregated lists to work from:

https://docs.google.com/spreadsheets/d/1ejOJTNTL5ApCuGTUciV0REEEAqvhI2Rd2FCoj7afops/edit#gid=0

https://tobiasdienlin.com/2019/03/03/publicly-available-open-datasets/

(We would want to contact these maintainers and work with them on appropriate citation/any existing coordination with authors)