In practice, you might not want to type out the full word .probability because typing without a keyboard can be frustrating. To help you type less, we created a shorthand feature. In the example above, you could note the passage .prob instead of .probability. The highlight would initially be tagged prob, but once you rename the shorthand a single time, Readwise will thereafter be trained to automatically convert to all .prob tags to .probability.
Readwise does tag expansion, use a shorthand tag name such as .prob and rename that in Readwise to .probability and from then on Readwise will expand the tag name from there. If slashes are okay in a inline tag name this would make it easy to expand .question to .annotation/question.