Question: Season six premiered with the series' highest-rated debut episode and a few of its succeeding episodes rank among the most watched episodes of American Idol. During this time, many television executives begun to regard the show as a programming force unlike any seen before, as its consistent dominance of up to two hours two or three nights a week exceeded the 30- or 60-minute reach of previous hits such as NBC's The Cosby Show. The show was dubbed "the Death Star", and competing networks often rearranged their schedules in order to minimize losses. However, season six also showed a steady decline in viewership over the course of the season. The season finale saw a drop in ratings of 16% from the previous year. Season six was the first season wherein the average results show rated higher than the competition stages (unlike in the previous seasons), and became the second highest-rated of the series after the preceding season.
Is there an answer to this question: Which season premiere was the most watched of all seasons?

Answer: Season six


Question: On October 28, 2015, IBM announced its acquisition of digital assets from The Weather Company—a holding company of Bain Capital, The Blackstone Group and NBCUniversal which owns The Weather Channel, including its weather data platforms (such as Weather Services International), websites (Weather.com and Weather Underground) and mobile apps. The acquisition seeks to use Watson for weather analytics and predictions. The acquisition does not include The Weather Channel itself, which will enter into a long-term licensing agreement with IBM for use of its data. The sale closed on January 29, 2016 
Is there an answer to this question: Why will The Weather Channel enter into a long-term agreement with NBCUniversal?

Answer: unanswerable


Question: Ion gauges are used in ultrahigh vacuum. They come in two types: hot cathode and cold cathode. In the hot cathode version an electrically heated filament produces an electron beam. The electrons travel through the gauge and ionize gas molecules around them. The resulting ions are collected at a negative electrode. The current depends on the number of ions, which depends on the pressure in the gauge. Hot cathode gauges are accurate from 10−3 torr to 10−10 torr. The principle behind cold cathode version is the same, except that electrons are produced in a discharge created by a high voltage electrical discharge. Cold cathode gauges are accurate from 10−2 torr to 10−9 torr. Ionization gauge calibration is very sensitive to construction geometry, chemical composition of gases being measured, corrosion and surface deposits. Their calibration can be invalidated by activation at atmospheric pressure or low vacuum. The composition of gases at high vacuums will usually be unpredictable, so a mass spectrometer must be used in conjunction with the ionization gauge for accurate measurement.
Is there an answer to this question: What gauge is accurate from 10-2 torr to 10-9 torr?

Answer: Cold cathode gauges


Question: Reservations are essentially caveats to a state's acceptance of a treaty. Reservations are unilateral statements purporting to exclude or to modify the legal obligation and its effects on the reserving state. These must be included at the time of signing or ratification, i.e. "a party cannot add a reservation after it has already joined a treaty".
Is there an answer to this question: What are parties to a treaty forbidden to do after they have already joined a treaty?

Answer:
add a reservation