1098 T section of Turbo Tax

On this question:  What portion of Box 5 is from VA Benefits and/or Tax Free Employer provided assistance.?, do you enter just the tax free portion of the employer provided assistance or the entire amount of the employer provided assistance. Employer gave employee $10000 for education, but only $5250 is tax free. Also, the difference between the $5250 and the $10000 was not included on the employee's w2.