This text is missing some spaces, please add them: ToallthosewhoarelookingfortrekkingtrailsduringtheirholidayinFriuliVeneziaGiulia,werecommendtheFirstWorldWartrails,suggestiveitinerarieswhichcrossCarso(KarstinEnglish,alimestoneregionwhichextendsinSloveniaandnorth-easternItaly)fordiscoveringthosesiteswheretheFirstWorldWartookplace.
To all those who are looking for trekking trails during their holiday in Friuli Venezia Giulia, we recommend the First World War trails, suggestive itineraries which cross Carso (Karst in English, a limestone region which extends in Slovenia and north-eastern Italy) for discovering those sites where the First World War took place.
input question: Fix spacing: Despitehisagehebecameastudentandhisfirstinterestwasinabstractalgebra.

output answer: Despite his age he became a student and his first interest was in abstract algebra.
Problem: Registration20August200503:57
What's a sentence that uses these characters?
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Registration 20 August 2005 03:57
Add spaces: Gorgeousinanyroom.IndlggetLampblevvistfrstegangdenFilDeFer.

Answer: Gorgeous in any room. Indlgget Lamp blev vist frste gang den Fil De Fer.
Inspring,usenon-oilyskinmoisturizer.Cosmeticsalsoneedachange....

In spring, use non-oily skin moisturizer. Cosmetics also need a change....
Add spaces: Geocachingisanactivityrelatedtowalking,tryingtofindtreasurewiththehelpofaGPS.

Answer:
Geocaching is an activity related to walking, trying to find treasure with the help of a GPS.