Problem: Please answer a question about the following article about Mandolin:
The mandolin has been used occasionally in rock music, first appearing in the psychedelic era of the late 1960s. Levon Helm of The Band occasionally moved from his drum kit to play mandolin, most notably on Rag Mama Rag, Rockin' Chair, and Evangeline. Ian Anderson of Jethro Tull played mandolin on Fat Man, from their second album, Stand Up, and also occasionally on later releases. Rod Stewart's 1971 No. 1 hit Maggie May features a significant mandolin riff. David Grisman played mandolin on two Grateful Dead songs on the American Beauty album, Friend of the Devil and Ripple, which became instant favorites among amateur pickers at jam sessions and campground gatherings. John Paul Jones and Jimmy Page both played mandolin on Led Zeppelin songs. The popular alt rock group Imagine Dragons feature the mandolin on a few of their songs, most prominently being It's Time. Dash Crofts of the soft rock duo Seals and Crofts extensively used mandolin in their repertoire during the 1970s. Styx released the song Boat on the River in 1980, which featured Tommy Shaw on vocals and mandolin. The song didn't chart in the United States but was popular in much of Europe and the Philippines.
Who played the drums and the mandolin in the group called The Band?
A: Levon Helm

Question: Read this and answer the question

Dark meat, which avian myologists refer to as "red muscle", is used for sustained activitychiefly walking, in the case of a chicken. The dark colour comes from the protein myoglobin, which plays a key role in oxygen uptake and storage within cells. White muscle, in contrast, is suitable only for short bursts of activity such as, for chickens, flying. Thus, the chicken's leg and thigh meat are dark, while its breast meat (which makes up the primary flight muscles) is white. Other birds with breast muscle more suitable for sustained flight, such as ducks and geese, have red muscle (and therefore dark meat) throughout. Some cuts of meat including poultry expose the microscopic regular structure of intracellular muscle fibrils which can diffract light and produce iridescent colours, an optical phenomenon sometimes called structural colouration.

Do some varities of poultry have more dark meat than others?
Answer: birds with breast muscle more suitable for sustained flight, such as ducks and geese, have red muscle (and therefore dark meat) throughout

Problem: where the uncertainty is given as the standard deviation of the measured value from its expected value. There are a number of other such pairs of physically measurable values which obey a similar rule. One example is time vs. energy. The either-or nature of uncertainty forces measurement attempts to choose between trade offs, and given that they are quanta, the trade offs often take the form of either-or (as in Fourier analysis), rather than the compromises and gray areas of time series analysis.
What measurable value obeys a similar rule of angular momentum?
The answer is the following: time vs. energy

French members of Parliament and other French politicians also organised a protest. All political parties in ParliamentUMP, Socialists, New Centre, Communists, Democratic Movement (centre) and Greensjointly requested a pause in the National Assembly's session, which was granted, so that MPs could step outside and unfurl a banner which read "Respect for Human Rights in China". The coach containing the torch drove past the National Assembly and the assembled protesting MPs, who shouted "Freedom for Tibet!" several times as it passed.
What text was on the banner that the politicians unrolled outside?
Respect for Human Rights in China

Input: Capacitor
Mechanically controlled variable capacitors allow the plate spacing to be adjusted, for example by rotating or sliding a set of movable plates into alignment with a set of stationary plates. Low cost variable capacitors squeeze together alternating layers of aluminum and plastic with a screw. Electrical control of capacitance is achievable with varactors (or varicaps), which are reverse-biased semiconductor diodes whose depletion region width varies with applied voltage. They are used in phase-locked loops, amongst other applications.

Of what type of diodes are varactors or varicaps comprised?
Output: reverse-biased semiconductor diodes

Problem: Please answer a question about the following article about Russian Soviet Federative Socialist Republic:
The Russian Soviet Federative Socialist Republic (Russian SFSR or RSFSR; Russian: , tr. Rossiyskaya Sovetskaya Federativnaya Sotsialisticheskaya Respublika listen (helpinfo)) commonly referred to as Soviet Russia or simply as Russia, was a sovereign state in 191722, the largest, most populous, and most economically developed republic of the Soviet Union in 192291 and a sovereign part of the Soviet Union with its own legislation in 199091. The Republic comprised sixteen autonomous republics, five autonomous oblasts, ten autonomous okrugs, six krais, and forty oblasts. Russians formed the largest ethnic group. To the west it bordered Finland, Norway and Poland; and to the south, China, Mongolia and North Korea whilst bordering the Arctic Ocean to the north, the Pacific Ocean to the east and the Black sea and Caspian Sea to the south. Within the USSR, it bordered the Baltic republics (Lithuania, Latvia and Estonia), the Byelorussian SSR and the Ukrainian SSR to the west. To the south it bordered the Georgian, Azerbaijan and Kazakh SSRs.
When did the RSFSR cease to be a part of the Soviet Union?
A:
91