[Q]: Sentence: From the 1990s to the 2010s, records continued to be manufactured and sold on a much smaller scale, and were especially used by disc jockeys (DJ)s, released by artists in some genres, and listened to by a niche market of audiophiles. Question: What is the niche market of phonograph record fans known as?
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[A]: yes

[Q]: Sentence: Grazing livestock may pull some grass out at the roots, but most is simply grazed upon, allowing the plant to regrow once again. Question: How do grass and kelp deal with being grazed upon?
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[A]: no

[Q]: Sentence: Contrarily, having so firmly entrenched themselves into Greek affairs, the Romans now completely ignored the rapidly disintegrating Seleucid empire (perhaps because it posed no threat); and left the Ptolemaic kingdom to decline quietly, while acting as a protector of sorts, in as much as to stop other powers taking Egypt over (including the famous line-in-the-sand incident when the Seleucid Antiochus IV Epiphanes tried to invade Egypt). Question: Who tried to invade Egypt in the famous line-in-the-sand incident?
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[A]:
yes