who held the fastes lap in Phoenix, Arizona? 
CREATE TABLE table_2454550_1 (fastest_lap VARCHAR, location VARCHAR)
SELECT fastest_lap FROM table_2454550_1 WHERE location = "Phoenix, Arizona"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_2454550_1 (fastest_lap VARCHAR, location VARCHAR) Question: who held the fastes lap in Phoenix, Arizona?  [/INST] SELECT fastest_lap FROM table_2454550_1 WHERE location = "Phoenix, Arizona" </s>