1.What is a - (a) consencual, (b) real, and (c) formal/ solemn contract? what are its essential elements? Give an example for each of these contracts.

2.A and B entered into a contract, of mortgag over A's house in favor of B. Thay agreed that in the event A is unable to pay the debt at maturity, the mortgaged house shall automatically belong in ownership to B. A failed to pay debt at maturity. In light of this stipulation, who now owns the house?

3.What is stipulation pout autrui. Give an example?

4.What is the protection referred to in Art. 1313 of the Civil Code? When can the creditor avail himself of such protection?