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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
I agree. Either the instructions need to be updated to include this case or the test needs to be changed to accept "The Step-daughter". The instructions make no mention if this possibility.
I think that a better solution would be to add some more tests that would fail if you changed to text of the identifiers. Right now its more like guessing what output is wanted for the final submission.
Don't take offense to this but is there a reason for everyones obsession with 1 liners that sacrifice readability on this website?