In Shakespeare's works between 1600 to 1610, how many of these have a character as a "Third Servingman"?
between 1600 to 1610 refers to DATE > = 1600 AND DATE < = 1610; "Third Servingman" refers to CharName = 'Third Servingman'
SELECT COUNT(DISTINCT T2.work_id) FROM works AS T1 INNER JOIN chapters AS T2 ON T1.id = T2.work_id INNER JOIN paragraphs AS T3 ON T2.id = T3.chapter_id INNER JOIN characters AS T4 ON T3.character_id = T4.id WHERE T1.DATE BETWEEN 1600 AND 1610 AND T4.CharName = 'Third Servingman'