On page 4 of the 1040NR you have it in Column (a)? Or is it on Schedule E page 2?

If there is an income treaty with taxpayer's country of residence, does it provide for a specific rate?

What kind of income is on the K-1?

Is this the only income on the 1040NR?

Also, this might be timely:

The IRS webinar Taxation of Nonresident Alien Individuals takes place on Thursday, Aug. 17 at 2 p.m. ET. Participants will be eligible to earn up to 2 continuing education credits for this webinar. For more information about the webinar and to register, visit the Webinars for Tax Practitioners webpage.