Where did BR Doctrove come from?
the country the umpire comes from refers to Country_Name; BR Doctrove refers to Umpire_Name = 'BR Doctrove'
SELECT T1.Country_Name FROM Country AS T1 INNER JOIN Umpire AS T2 ON T2.Umpire_Country = T1.Country_Id WHERE T2.Umpire_Name = 'BR Doctrove'