2. Translate the following two English sentences to first-order logic sentences (a). Two persons are siblings if they have the same father or the same mother. (b). Every even natural number bigger than 2 is a sum of two prime numbers. For this question, only use the following syntax: - Constants: 2 - Predicates: siblings, even, prime, > - Functions: fatherOf, motherOf, + - Variables: x, y, z, .. (Other letters are fine) - Connectives: ,, - Equality: = - Quantifiers