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].

Q: The Iranian ballistic missile launch that  President Donald Trump  tweeted about Saturday apparently never happened.
On Saturday   Trump  tweeted: âIran just test-fired a Ballistic Missile capable of reaching Israel.They are also working with North Korea.Not much of an agreement we have!â
Iran just test-fired a Ballistic Missile capable of reaching Israel.They are also working with North Korea.Not much of an agreement we have! â Donald J. Trump (@realDonaldTrump) September 23  2017
 Trump  has been criticized a number of times for jumping to conclusions and commenting on Twitter before breaking news reports have been confirmed.
As of Monday night   he  had not deleted the erroneous tweet.
Separately  Twitter Inc. TWTR  -2.30% on Monday explained that it would not block Trumpâs more incendiary tweets because they are newsworthy. Some had complained to Twitter that  his  threats toward North Korean leader Kim Jong Un â which North Korea said Monday it took as a âdeclaration of warâ â violated the companyâs terms of service.

A: Donald J. Trump
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Q: The women told the Austin American-Statesman that opera executives and board members knew of  Richard Buckley's  behavior  but chose not to intervene because of  his  fame and talent.
On Feb. 1  Austin Opera said it fired  Buckley  for inappropriate behavior that violated the company's policy on harassment. The opera declined to provide further details.
 Buckley  told the Statesman in a statement that  he  never intended to offend anyone and that  he  used humor to "release pressure and defuse tension. "
Buckley  was in  his  13th season with Austin Opera.

A: Richard Buckley
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Q: Your smartphone camera may pack a lot of megapixels into a pocket-sized package  but when it comes to keeping up with your adventures  it often falls short. You probably wouldn’t use your phone to record a snowboarding run  a snorkeling expedition  or a freefall out of an airplane  would you? No  for those kinds of extracurriculars  you’ll need a camera designed to capture life the way you live it  a reliably durable  endlessly portable device that can record every ride  jump  and splash in vivid detail. You’ll need  the YoCam Versatile Waterproof HD Camera .
After earning more than $1 million in  its  massively successful Indiegogo campaign  YoCam is now available to the public. This all-in-one digital device is super small (about 3 inches long and 1 inch wide)  super lightweight (about 2 ounces)  and super waterproof (in water up to 20 feet deep)  allowing you to capture mind-blowing pictures and video at 8MP resolution. It also features built-in image and video stabilization to minimize shakiness during your wildest activities  and the ability to connect to a compatible smartphone app to unlock tons of cool features.
Available for both iOS and Android devices  the YoCam app includes functions like story generator  live previewing  video editing  and social media sharing. There’s even a camera control feature that lets you set up your  YoCam  as a security monitoring device that you can activate and manipulate from miles away. If you’ve got a child or a pet at home  or you just want to watch over your valuables while you’re away   YoCam  and  its  app can make it happen.
 YoCam  is equipped with a built-in 700 mAh lithium-ion battery that can provide up to 2 hours of continuous recording at 1080p  320fps. When  it ’s time to recharge  your YoCam   simply plug  its  included micro-USB charging cable into the USB port on your laptop  desktop  or wall charger. The device also comes with a handy mounting clip and a pendant cord.

A:
YoCam
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