user: Question: When did the wind farm in Musselshell started service?
Columns: ['Wind farm', 'Installed capacity (MW)', 'Turbine Manufacturer', 'County', 'Date in Service']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Glacier Wind Farm I and II (NaturEner)', '210', 'Acciona 1.5MW', 'Glacier/Toole', '2008-2009']
SQL:

assistant: SELECT "Date in Service" FROM "Table" WHERE "County" = 'Musselshell';