I know that the answer to the question "The vowels at first are described how?" is in "In Eastern Catalan (except Majorcan), unstressed vowels reduce to three: /a e / > []; /o u/ > [u]; /i/ remains distinct. There are a few instances of unreduced [e], [o] in some words. Alguerese has lowered [] to [a].". Can you tell me what it is?
Ans: unstressed vowels reduce to three

I know that the answer to the question "Which of the following is not an alternative to rotary stepper motors: linear stepper motors, servomotors, or optical scanners?" is in "Stepper motors were and still are often used in computer printers, optical scanners, and digital photocopiers to move the optical scanning element, the print head carriage (of dot matrix and inkjet printers), and the platen or feed rollers. Likewise, many computer plotters (which since the early 1990s have been replaced with large-format inkjet and laser printers) used rotary stepper motors for pen and platen movement; the typical alternatives here were either linear stepper motors or servomotors with closed-loop analog control systems.". Can you tell me what it is?
Ans: optical scanners

I know that the answer to the question "Who makes a good pair?" is in "A further example is the goby fish, which sometimes lives together with a shrimp. The shrimp digs and cleans up a burrow in the sand in which both the shrimp and the goby fish live. The shrimp is almost blind, leaving it vulnerable to predators when outside its burrow. In case of danger the goby fish touches the shrimp with its tail to warn it. When that happens both the shrimp and goby fish quickly retreat into the burrow. Different species of gobies (Elacatinus spp.) also exhibit mutualistic behavior through cleaning up ectoparasites in other fish.". Can you tell me what it is?
Ans: the shrimp and the goby

I know that the answer to the question "What has happened to indie music?" is in "Since the mid-2000s, the mainstreaming of bands like Wilco and Feist have pushed indie rock into the adult contemporary conversation. In the early 2010s, indie musicians like Imagine Dragons, Mumford & Sons, Of Monsters & Men, The Lumineers and Ed Sheeran also had indie songs that crossed over to the adult contemporary charts.". Can you tell me what it is?
Ans: crossed over to the adult contemporary charts