Add english prompts for GEM/wikilingua (18 languages)

[haileyschoelkopf]

Added 5 English prompts for each of the 18 languages in GEM/wikilingua!

Will need others to write non-english prompts for this dataset if time permits.

[afaji]

@haileyschoelkopf I can assist the Indonesian

[haileyschoelkopf]

@afaji That would be great! Thank you

[afaji]

https://github.com/haileyschoelkopf/promptsource/pull/1/files <- Indonesian prompt for wikilingua

[stephenbach]

Looks good! Should the article_summary_xx prompts indicate what the language should be?

[haileyschoelkopf]

I could definitely make that change if you think it's better!

My idea was to have a prompt that didn't indicate the language (since these dataset splits all have the same source and target language) to see if it degraded performance when summary language wasn't explicitly specified, but that might not be desirable for the hackathon evals.

[stephenbach]

Yes, I think we should change it (or remove if that makes the prompt redundant with others?) It's a potentially interesting comparison to make, but balanced against the overall criteria for prompts in promptsource, I think it's better to have the task explicitly stated. CCing @awebson to see if he agrees?

[haileyschoelkopf]

Of course, makes sense! I've made the changes and explicitly stated language for the tldr_xx prompts as well.

[stephenbach]

Looks great! Thanks!