Use "concordat" in a sentence

1. (b) In the Concordat between the Nazi State and the Vatican, what two clauses were kept secret?

(ब) नाट्ज़ी सरकार और वैटिकन के बीच की धर्मसन्धि में, कौनसे दो खण्डवाक्य गुप्त रखे गए?