Database: food_inspection
Question: Who is the owner of the business that has a high risk violation of 103109 and described as unclean or unsanitary food contact surfaces?
SQL: SELECT DISTINCT T2.owner_name FROM violations AS T1 INNER JOIN businesses AS T2 ON T1.business_id = T2.business_id WHERE T1.risk_category = 'High Risk' AND T1.violation_type_id = 103109 AND T1.description = 'Unclean or unsanitary food contact surfaces'