input question: Fix spacing: Durationofnightsleeptobeatleast8hours.

output answer: Duration of night sleep to be at least 8 hours.


input question: Fix spacing: Thisisthebestapplicationforconvertingdamaged,corruptedandevenpassword-protectedOSTfilesintoOutlookPSTfileformat.

output answer: This is the best application for converting damaged, corrupted and even password-protected OST files into Outlook PST file format.


input question: Fix spacing: MB:Yeah.Theyshouldneverhavechangedit.

output answer: MB: Yeah. They should never have changed it.


input question: Fix spacing: GivenPetrovsky'sexpertiseindifferentialequations,thetopologyofalgebraiccurvesandsurfacesandmathematicalphysics,itisnotdifficulttoseehisinfluenceonthedirectionthatOleinik'sworkwouldtake.

output answer:
Given Petrovsky 's expertise in differential equations, the topology of algebraic curves and surfaces and mathematical physics, it is not difficult to see his influence on the direction that Oleinik's work would take.