inf_type
http://data.gesis.org/questionfeatures#InformationType_Evaluation
http://data.gesis.org/questionfeatures#InformationType_Prediction
http://data.gesis.org/questionfeatures#InformationType_Assessment
http://data.gesis.org/questionfeatures#InformationType_Demography
http://data.gesis.org/questionfeatures#InformationType_Fact
http://data.gesis.org/questionfeatures#InformationType_Kognition
http://data.gesis.org/questionfeatures#InformationType_Perception
http://data.gesis.org/questionfeatures#InformationType_Behaviour
http://data.gesis.org/questionfeatures#InformationType_Use
http://data.gesis.org/questionfeatures#InformationType_Preference
http://data.gesis.org/questionfeatures#InformationType_Emotion