What kind of "wi-fi" does Yelp business No."10172" have?
kind of wi-fi refers to attribute_value where attribute_name = 'Wi-Fi'; business No. refers to business_id;
SELECT T2.attribute_value FROM Attributes AS T1 INNER JOIN Business_Attributes AS T2 ON T1.attribute_id = T2.attribute_id WHERE T2.business_id = 10172 AND T1.attribute_name LIKE 'wi-fi'