Question: What is the primary type of all single female employees hired between 1/1/2008 to 12/31/2008?
SQL: SELECT T2.PersonType FROM Employee AS T1 INNER JOIN Person AS T2 ON T1.BusinessEntityID = T2.BusinessEntityID WHERE T1.Gender = 'F' AND T1.MaritalStatus = 'S' AND STRFTIME('%Y-%m-%d', T1.HireDate) BETWEEN '2008-1-1' AND '2008-12-31' GROUP BY T2.PersonType ORDER BY COUNT(T2.PersonType) DESC LIMIT 1