user: Question: What is the total number of First Elected that has counties represented of anne arundel, District of 30, and a ways and means Committee?
Columns: ['District', 'Counties Represented', 'Delegate', 'Party', 'First Elected', 'Committee']
Types: ['text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['21', "Anne Arundel , Prince George's", 'Frush, Barbara A. Barbara A. Frush', 'Democratic', 1994.0, 'Environmental Matters']
SQL:

assistant: SELECT COUNT("First Elected") FROM "Table" WHERE "Counties Represented" = 'anne arundel' AND "District" = '30' AND "Committee" = 'ways and means';