Rule reminder
ENTRARCI means 'to have to do with / to be related to'. C'entra = it has to do with it. Non c'entra = it has nothing to do with it. C'entro (io) = I have something to do with it. Often used to deny relevance.
A: 'È colpa del governo!' B: 'Ma il governo ___ in questa questione!' (The government has nothing to do with this matter!)