please provide proof that your answer works. please provide one statement

Given tables students, friends, and incomes with the following schemas, students Column Type INTEGER name TEXT friends Column Type INTEGER friend_id INTEGER incomes Column Type INTEGER salary REAL Assuming no two students (ie., id's) earn the same salary in incomes and each student (id) has only one friend (friend_id) in friends. Write an SQL statement to retrieve the names of the students who earn less than their friends. Output the student names in descending orders of their friends' salaries