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 most common strain of influenza this year is H3N2 (A)  which was covered by this yearâs flu vaccine. While strains can still mutate in individual cases and render the vaccine ineffective for some people  the flu vaccine can also help lessen the severity of illness in some of these cases  said  Dr. Robert Citronberg  infectious disease physician with Advocate Health Care .
At Lutheran General Hospital in Park Ridge   Citronberg  has seen a steady influx of patients with the flu  which presents  itself  with symptoms including high fever  chills  muscle aches and fatigue   he  said.
âPeople who have genuinely true influenza say that they feel like they got run over by a truck â  Citronberg  said.
An anti-viral prescription medication known as Tamiflu is available to both children adults suffering from the flu. Doctors recommend plenty of rest  drinking fluids and staying away from other people  since people with the flu are typically contagious for about seven days   Citronberg  said.

A: Robert Citronberg
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Q: Rodrigo Garcia Pinochet  the dictator's grandson  said the clan was innocent and placed all its trust in Chile's judicial system.
 Garzon went after Pinochet in 1998 under a Spanish legal doctrine that allowed particularly grave crimes to be prosecuted in this country even if they are alleged to have been committed abroad and had no tie to Spain. Britain ultimately declined to extradite Pinochet  saying he was ill.
Pinochet in 1998 under a Spanish legal doctrine that allowed particularly grave crimes to be prosecuted in this country even if they are alleged to have been committed abroad and had no tie to Spain. Britain ultimately declined to extradite Pinochet  saying he was ill.
 Pinochet died in Chile in 2006 without having stood trial for abuses during his 1973-90 dictatorship.
 The amount of the bond sought by Garzon -- $77 348 374 -- is equivalent to the amount of state money allegedly pilfered and laundered by Pinochet  Garzon said. He said the figure came from by a Madrid-based human rights group which requested the probe  the Fundacion Espanola Presidente Allende  which obtained it from Chilean investigators.
 The foundation is named for Salvador Allende  the president that Pinochet ousted in 1973. Allende died in the coup.

A: Rodrigo Garcia Pinochet
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Q: Russian President Vladimir Putin  says an explosion at a St. Petersburg supermarket on Wednesday was a terrorist act  and that another attack in the city had been foiled by the country's security service.
A bomb went off in a branch of the Perekrestok supermarket  wounding at least 13 shoppers in  Putin 's hometown  Reuters reports:
No group has taken responsibility for the explosion. A spokesman for  Putin   Dmitry Peskov  would not say why authorities believed it to be terrorism  but said because the bomb was packed with shrapnel proved it "was a terrorist attack anyway." Investigators said the device contained 7 ounces of explosives.
A Kremlin spokesman told Reuters that the thwarted attack  Putin  referenced was the one earlier this month that targeted St. Petersburg's Kazansky Cathedral. The Federal Security Service said seven suspects linked to ISIS have been arrested in connection with that plot.  Putin  had called Donald Trump and thanked  him  for the CIA tip that led to the capture of the suspects.
On Thursday  Putin  said that the operation in Syria had reduced the threat of attacks in Russia  functioning as a preemptive strike against terrorists.
"What would have happened if those thousands (of terrorists) that I have just spoken about  hundreds of them had come back to us  trained and armed "  he  said in comments to Russian news agencies  The Associated Press reports.

A:
Putin
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