What is the feature type name of feature AirCon?
create table other_available_features (feature_type_code varchar, feature_name varchar, PRIMARY KEY (feature_type_code)); create table ref_feature_types (feature_type_name varchar, feature_type_code varchar, PRIMARY KEY (feature_type_name))
select t2.feature_type_name from other_available_features as t1 join ref_feature_types as t2 on t1.feature_type_code = t2.feature_type_code where t1.feature_name = "aircon"