Between 2014 to 2016, what is the average inpsection score of the establishment owned by Yiu Tim Chan in 808 Pacific Ave, San Francisco?
average inspection score refers to avg(score); establishment owned by Yiu Tim Chan refers to business_id where owner_name = 'Yiu Tim Chan'; Between 2014 to 2016 refers to year(date) between 2014 and 2016; address = '808 Pacific Ave'; city = 'San Francisco';
SELECT AVG(T1.score) FROM inspections AS T1 INNER JOIN businesses AS T2 ON T1.business_id = T2.business_id WHERE STRFTIME('%Y', T1.`date`) BETWEEN '2014' AND '2016' AND T2.owner_name = 'Yiu Tim Chan' AND T2.address = '808 Pacific Ave' AND T2.city = 'San Francisco'
database name:db_id food_inspection
businesses table businesses Cols: business id dtype integer, name dtype text, address dtype text, city dtype text, postal code dtype text, latitude dtype real, longitude dtype real, phone number dtype integer, tax code dtype text, business certificate dtype integer, application date dtype date, owner name dtype text, owner address dtype text, owner city dtype text, owner state dtype text, owner zip dtype text, 
inspections table inspections Cols: business id dtype integer, score dtype integer, date dtype date, type dtype text, 
violations table violations Cols: business id dtype integer, date dtype date, violation type id dtype text, risk category dtype text, description dtype text, 
