Question: Extract the answer to the question from the following context. Question: What elements of the properties of QED vacuum don't exist physically? Context: QED vacuum has interesting and complex properties. In QED vacuum, the electric and magnetic fields have zero average values, but their variances are not zero. As a result, QED vacuum contains vacuum fluctuations (virtual particles that hop into and out of existence), and a finite energy called vacuum energy. Vacuum fluctuations are an essential and ubiquitous part of quantum field theory. Some experimentally verified effects of vacuum fluctuations include spontaneous emission and the Lamb shift. Coulomb's law and the electric potential in vacuum near an electric charge are modified.
Answer: virtual particles

Question: Extract the answer to the question from the following context. Question: Did more United States or Australian troops enter Iraq? Context: After the lengthy Iraq disarmament crisis culminated with an American demand that Iraqi President Saddam Hussein leave Iraq, which was refused, a coalition led by the United States and the United Kingdom fought the Iraqi army in the 2003 invasion of Iraq. Approximately 250,000 United States troops, with support from 45,000 British, 2,000 Australian and 200 Polish combat forces, entered Iraq primarily through their staging area in Kuwait. (Turkey had refused to permit its territory to be used for an invasion from the north.) Coalition forces also supported Iraqi Kurdish militia, estimated to number upwards of 50,000. After approximately three weeks of fighting, Hussein and the Ba'ath Party were forcibly removed, followed by 9 years of military presence by the United States and the coalition fighting alongside the newly elected Iraqi government against various insurgent groups.
Answer: United States

Question: Extract the answer to the question from the following context. Question: What occurred in the 12th year of the century known as the 2000s? Context: According to the Crisis Group, since Myanmar transitioned to a new government in August 2011, the country's human rights record has been improving. Previously giving Myanmar its lowest rating of 7, the 2012 Freedom in the World report also notes improvement, giving Myanmar a 6 for improvements in civil liberties and political rights, the release of political prisoners, and a loosening of restrictions. In 2013, Myanmar improved yet again, receiving a score of five in civil liberties and a six in political freedoms
Answer:
Myanmar transitioned to a new government