List down the district number of the representative of the house named Jonathan Grout.
district number refers to district; representative of the house refers to type = 'rep';
SELECT T2.district FROM historical AS T1 INNER JOIN `historical-terms` AS T2 ON T1.bioguide_id = T2.bioguide WHERE T1.last_name = 'Grout' AND T1.first_name = 'Jonathan' AND T2.type = 'rep'