logic - First-order predicate calculus, am I doing this right

Question

A) There was a student in CS 540 Fall 1999 who was born in a country in South America.

B) John sold Mary his CS 540 textbook (and, hence, this book that John formerly owned is now owned by Mary).

question from:https://stackoverflow.com/questions/65862544/first-order-predicate-calculus-am-i-doing-this-right

Answer 1

Waitting for answers