This text is missing some spaces, please add them: Duringtheperiodfrom1914to1915hewasadeputyattheTeacherStudiesinUppsala,partlyasprofessorofmathematicsatUppsalaUniversity(7May-27May1920)andthen,from9July1920,hewasappointedasprofessorofdescriptivegeometryattheRoyalInstituteofTechnology(KTH)inStockholm,apostwhichhehelduntil1927.
During the period from 1914 to 1915 he was a deputy at the Teacher Studies in Uppsala, partly as professor of mathematics at Uppsala University (7 May - 27 May 1920) and then, from 9 July 1920, he was appointed as professor of descriptive geometry at the Royal Institute of Technology (KTH) in Stockholm, a post which he held until 1927.
input question: Fix spacing: HoweversometimeswhenyoutrytoplayyourMOVvideofileusingthelatestQuickTimeyoumayencounteranerrormessage.

output answer: However sometimes when you try to play your MOV video file using the latest QuickTime you may encounter an error message.
Problem: Ofnylonorotherpolyamidesorofpolyesters
What's a sentence that uses these characters?
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Of nylon or other polyamides or of polyesters
Add spaces: Butitistrickytogivetotalnumbersfortheentireareabasedonlyonthesepointmeasurements,"saysRuthMottramandcontinues"withthenewmodelwecanmakethoroughcomparisonswithobservationsandhavelargerconfidenceintheresults."

Answer: But it is tricky to give total numbers for the entire area based only on these point measurements," says Ruth Mottram and continues "with the new model we can make thorough comparisons with observations and have larger confidence in the results."
Depositrequestedpriortoarrival:Afterconfirmingyourreservation,youwillbecontactedbyAillebaunSelfCatering.

Deposit requested prior to arrival: After confirming your reservation, you will be contacted by Aillebaun Self Catering.
Add spaces: Seborrheacausestheskintoexudeawaxy,greasysubstancethatclumpsupintheears,underthebellyandarmpits,elbows,andaroundtheankles.

Answer:
Seborrhea causes the skin to exude a waxy, greasy substance that clumps up in the ears, under the belly and armpits, elbows, and around the ankles.