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Air quality in Boston is generally very good: during the ten-year period 20042013, there were only 4 days in which the air was unhealthy for the general public, according to the EPA.

How is the air quality in Boston?
Answer: generally very good
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Numerous modern mandolin makers build instruments that largely replicate the Gibson F-5 Artist models built in the early 1920s under the supervision of Gibson acoustician Lloyd Loar. Original Loar-signed instruments are sought after and extremely valuable. Other makers from the Loar period and earlier include Lyon and Healy, Vega and Larson Brothers. Some notable modern American carved mandolin manufacturers include, in addition to Kay, Gibson, Weber, Monteleone and Collings. Mandolins from other countries include The Loar (China), Santa, Rosa (China), Michael Kelly (Korea), Eastman (China), Kentucky (China), Heiden (Canada), Gilchrist (Australia) and Morgan Monroe (China).

Who supervised the Gibson F-5's replication?
Answer: Gibson acoustician Lloyd Loar
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On April 26, 1496 King John I Albert granted the Privilege of Piotrkow (Polish: "Przywilej piotrkowski", "konstytucja piotrkowska" or "statuty piotrkowskie"), increasing the nobility's feudal power over serfs. It bound the peasant to the land, as only one son (not the eldest) was permitted to leave the village; townsfolk (Polish: "mieszczanstwo") were prohibited from owning land; and positions in the Church hierarchy could be given only to nobles.

Who was allowed to leave the village?
Answer:
one son (not the eldest)