Q: In this task, you are given a context paragraph of the tweet and question. Your task is to generate right answer of given question based on given context tweet paragraph.
Context: It has been a blessing to know John Glenn and for Connie and me to count him and Annie as mentors and friends. We will miss him. - SB Sherrod Brown (@SenSherrodBrown) December 8, 2016 Question: what's the only last name mentioned?
A:
glenn