[Q]: [Rockcrystalisthemostpowerfultype.]
[A]: [Rock crystal is the most powerful type.]
Problem: Add spaces: AfterahalfaminutethoughitseemedtoregaincontrolanddidacompleteUturnandwentbackthewayithadcome.

Spaces added: After a half a minute though it seemed to regain control and did a complete U turn and went back the way it had come.
This text is missing some spaces, please add them: Anginaisusuallyawarningsignofthepresenceofsignificantcoronaryarterydisease.
Angina is usually a warning sign of the presence of significant coronary artery disease.
input question: Fix spacing: Hesatinonthisinterview,andnowhassomethingtoadd:

output answer: He sat in on this interview, and now has something to add:
Problem: LenovohopestobetheNo.1supercomputercompanyintheyearsaheadandisinvestingwiththatgoalinmind.Thecompanywillmovequicklytogosoftwaredefined.
What's a sentence that uses these characters?
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Lenovo hopes to be the No. 1 supercomputer company in the years ahead and is investing with that goal in mind.The company will move quickly to go software defined.
Keepabackupofyourimportantfilesinaseparatedrive
Keep a backup of your important files in a separate drive