Cardinal (Catholicism):

A cardinal named in pectore is known only to the pope; not even the cardinal so named is necessarily aware of his elevation, and in any event cannot function as a cardinal while his appointment is in pectore. Today, cardinals are named in pectore to protect them or their congregations from reprisals if their identities were known.

Please answer a question about this article. If the question is unanswerable, say "unanswerable". What does the cardinal named pectore know?
unanswerable