Wards where Bennett holds appointments

HR is preparing doctor Bennett's on-call schedule and wants to see his coverage area. Return all wards where he held appointments. Remove duplicates and sort the result alphabetically.

Expected output sample

This is what a correct answer looks like — its row count is its own, it doesn't have to match the schema tables. Your answer must use the same column names as this sample — alias them with AS if needed.

ward_code
CARD-A
CARD-B
NEURO-A

Your query result will appear here

Focus radio

Paused · SomaFM · Fluid