I’m a fan of Apple Support’s Twitter account (@AppleSupport).
I wish there was a way to teach Siri to better understand my pronunciation of other words, like Draymond Green. The technique @AppleSupport shows in the linked tweet works for names in your address book, but not for other names and other words.
Unfortunately, this feature generally doesn’t work for me and for many people (as can be seen in @AppleSupport direct replies).
If the person is in your contacts you can also add phonetic and pronunciation spellings for first and last names. Just select Add Field and they’re among the choices. Maiden name and nickname have also come in handy.
I taught Siri how to pronounce my girlfriend’s name. It’s pretty good, but once in a while – I have not yet noticed a pattern – it will revert to the incorrect pronunciation. Maybe 9.3.2 will be more consistent (still on 9.2.1).