We think it’s the right time to enforce the adoption of ethical
guidelines and legal rules for guaranteeing integrity and transparency
of the process of collecting data, and for conducting analyses that
respond to privacy and confidentiality wishes of the users. Some
of these ethical guidelines, laws and licenses express policies and
norms3, in particular they express obligations, having the form “we
shall”, and prohibitions with the form “we shall not”, on how data
can be collected, stored, used, and so on. Those policies are usu-
ally expressed in natural language (e.g. English): therefore, in order
to comply with policies coming from different sources, researchers