[Q]: Extract the answer to the question from the following context. Question: What is the lower bound of Valencia's population in millions? Context: Valencia (/vlnsi/; Spanish: [balenja]), or Valencia (Valencian: [valensia]), is the capital of the autonomous community of Valencia and the third largest city in Spain after Madrid and Barcelona, with around 800,000 inhabitants in the administrative centre. Its urban area extends beyond the administrative city limits with a population of around 1.5 million people. Valencia is Spain's third largest metropolitan area, with a population ranging from 1.7 to 2.5 million. The city has global city status. The Port of Valencia is the 5th busiest container port in Europe and the busiest container port on the Mediterranean Sea.
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[A]: 1.7

[Q]: Extract the answer to the question from the following context. Question: What media is used to grow a single bacteria? Context: In the laboratory, bacteria are usually grown using solid or liquid media. Solid growth media, such as agar plates, are used to isolate pure cultures of a bacterial strain. However, liquid growth media are used when measurement of growth or large volumes of cells are required. Growth in stirred liquid media occurs as an even cell suspension, making the cultures easy to divide and transfer, although isolating single bacteria from liquid media is difficult. The use of selective media (media with specific nutrients added or deficient, or with antibiotics added) can help identify specific organisms.
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[A]: solid

[Q]: Extract the answer to the question from the following context. Question: Who originally came up with the idea of the ice age? Context: In the Miocene Epoch the mountains underwent severe erosion because of glaciation, which was noted in the mid-19th century by naturalist Louis Agassiz who presented a paper proclaiming the Alps were covered in ice at various intervalsa theory he formed when studying rocks near his Neuchatel home which he believed originated to the west in the Bernese Oberland. Because of his work he came to be known as the "father of the ice-age concept" although other naturalists before him put forth similar ideas.
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[A]: other naturalists

[Q]: Extract the answer to the question from the following context. Question: What method of tracking failed the least? Context: Airborne Interception radar (AI) was unreliable. The heavy fighting in the Battle of Britain had eaten up most of Fighter Command's resources, so there was little investment in night fighting. Bombers were flown with airborne search lights out of desperation[citation needed], but to little avail. Of greater potential was the GL (Gunlaying) radar and searchlights with fighter direction from RAF fighter control rooms to begin a GCI system (Ground Control-led Interception) under Group-level control (No. 10 Group RAF, No. 11 Group RAF and No. 12 Group RAF).
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[A]:
GL (Gunlaying) radar and searchlights with fighter direction from RAF fighter control