Problem: Add spaces: Thefoldingprinciplehasprovenitselftobesuitableforusewithothermaterials:cardboard,aeroplaneveneer,syntheticandnaturalmembranesetc.

Spaces added: The folding principle has proven itself to be suitable for use with other materials: cardboard, aeroplane veneer, synthetic and natural membranes etc.
This text is missing some spaces, please add them: AdditionaltypesoffilesmayalsobeusingtheDARKfileextension.IfyouareawareofanyotherfileformatsusingtheDARKfileextension,pleasecontactussothatwecanupdateourinformationaccordingly.
Additional types of files may also be using the DARK file extension. If you are aware of any other file formats using the DARK file extension, please contact us so that we can update our information accordingly.
input question: Fix spacing: UnderAppearance,changethesettingsofthehomebuttonifnecessary.

output answer: Under Appearance, change the settings of the home button if necessary.
Problem: Ratings:SportTiedjeceilingfixationforpunchingbags
What's a sentence that uses these characters?
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Ratings: Sport Tiedje ceiling fixation for punching bags
Add spaces: nowavailableforiPhone/AndroidreadablenowavailableforiPhone/Androidreadable

Answer: now available for iPhone / Android readable now available for iPhone / Android readable
This text is missing some spaces, please add them: Duringthenextthreeyearsover300hereticswereburnedatthestakeearningherthetitle"bloodyMary".
During the next three years over 300 heretics were burned at the stake earning her the title "bloody Mary".