instruction:
Given a document, find the main entity about whom the author is writing. Write the full name if mentioned in the text. Note that URLs in the text have been replaced with [Link].
question:
If your mum posted a video of you belting out Madonna's "Holiday" in the car on your birthday  you'd probably want to melt into a puddle of embarrassment.
Unless your mum happens to be Madonna.
Celebrating the birthday of her son  David Banda   Madonna  posted an Instagram video to  her  10.2 million followers on Sunday. The video features David having a delightful singalong worthy of Carpool Karaoke  to his own mum's 1983 hit single  "Holiday."
Go David!! ððð¦.Its your birthday!!! ðððððð We Gonna Party! â½ï¸â¥ï¸â½ï¸â¥ï¸â½ï¸ðâ½ï¸ Like its your birthday!! ððð¦ðð¦ðððððððð!! Its Time to Celebrate! ððð¤¡ pic.twitter.com/W1WcENjb0R â Madonna (@Madonna) September 24  2017
 Madonna  adopted David from Malawi in 2006. Here's another Instagram post from pop's proud  proud mum  posted on Sunday and featuring a mini David:
Happy Birthday to My Beautiful baby Boy!! ðððððððððð David Banda!! ð¦ð¦ð¦ððððð I wish I could stilll carry you Bapu Style! â¥ï¸ð¯â¥ï¸ð¯â¥ï¸ð¯â¥ï¸ð¹ð²ð¼ð²ð¼ð²ð¼â¥ï¸ðð» A post shared by  Madonna  (@madonna) on Sep 24  2017 at 3:10am PDT
answer:
Madonna


question:
Duke  took home the title last year and could become the first repeat winner since the Blue Devils won three straight (2009-11)  but several teams need a memorable run far more.
No.  2 Duke
Weakness: Consistency.  Duke  suffered head-scratching losses to Boston College and St. Johnâs.
Star: Deng Adel (15.5 ppg  5.3 rpg) â The junior shined here last year  scoring a team-high 21 points in a quarterfinal loss to Duke.
Strength: A high ceiling. B.C. has beaten  Duke  and Miami  and lost to Virginia by one-point.
answer:
Duke


question:
WASHINGTON (Reuters) - President Donald Trump’s lawyer said on Thursday he would try to stop publication of a book that portrays an inept president in a fumbling White House and threatened legal action against former top aide Steve Bannon over “defamatory” comments in the book.
Harder also told Reuters “legal action is imminent” against  Bannon .
Trump cut ties with  Bannon  on Wednesday  saying his former adviser had “lost his mind ” in a blistering statement issued after comments attributed to  Bannon  in the book were made public.
Trump lawyers sent a cease-and-desist letter to  Bannon  on Wednesday asking  him  not to disclose any confidential information. They said  Bannon  had breached an agreement by communicating with Wolff about Trump  his family and the campaign and made “disparaging statements and in some cases outright defamatory statements” about them.
In the book   Bannon  was quoted as describing a June 2016 meeting with a group of Russians at Trump Tower in New York as “treasonous” and “unpatriotic.” The meeting  held after the Russians promised damaging information on Democratic presidential candidate Hillary Clinton  was attended by Donald Trump Jr.  Trump’s son-in-law Jared Kushner and Paul Manafort  who was Trump’s campaign manager at the time.
Trump’s statement also diminished  Bannon ’s role in the election victory and accused  him  of leaking to the media. Before joining the campaign   Bannon  had headed conservative Breitbart News website and  he  proved to be a divisive figure in the White House.  He  returned to Breitbart after being fired  although he reportedly continued to talk with Trump.
FILE PHOTO:  White House Chief Strategist Stephen Bannon (L)  attends a meeting between U.S. President Donald Trump and congressional leaders to discuss trade deals at the at the Roosevelt room of the White House in Washington U.S.  February 2  2017. REUTERS/Carlos Barria/File Photo
 Bannon ’s reaction to the book controversy has been muted. In interviews with Breitbart News after the news broke   he  called Trump a “great man” and pledged continued support for his agenda.
Bradley Moss  a Washington lawyer specializing in national security law  said any non-disclosure agreement would not apply to  Bannon  once  he  became a government employee. The government has far less power to limit speech by employees than private companies  Moss said.
A lawsuit could hurt Trump because  Bannon ’s lawyers would be entitled to interview White House officials and collect potentially damaging documents from them in his defense  Moss said.
On Thursday  the White House said no personal devices  including cellphones  would be allowed in the West Wing beginning next week for security purposes. The moves followed the  Bannon  split but had been considered for some time.
 Bannon  helped Trump shape a populist  anti-establishment message and had been the president’s link to  his  hard-line conservative base of support  which is often at odds with the Republican Party establishment.
answer:

Steve Bannon