Use the Database Company shown on pages 7 to 9 to answer the questions (a) to (c):

1. Retrieve both the names and social security numbers of employees who do not work on any one of projects with the project number 1, 2, and 3. (Show the query and output)

2. Retrieve the social security number and the name of each employee, and the corresponding social security number and the name of his/her supervisees if any. (Otherwise, just display the employee's social security number and name.) (Show the query and output)

3. Retrieve the social security numbers of all direct supervisees of James E.

Borg. (Show the query and output)