input question: Fix spacing: ThisarticleisbasedonthefreeeBook"21stCenturyInternships"

output answer: This article is based on the free eBook "21st Century Internships"

input question: Fix spacing: Theirposterdesignwastoincludethemainmouthcaremessagessuchas:

output answer: Their poster design was to include the main mouth care messages such as:

input question: Fix spacing: ItcamefromthepenoftheFrenchmanEugenePottier,thereisanactivePariserKommuneuntiltheircrackdown1871participated.Hisverseswerethen1888settomusicbytheBelgianPierreDegeyter.KarlMarxwrotetotheGeneralCounciloftheInternationalWorkingMen'sAssociationatthetime:"Workingmen'sParis,withhiscommune,willbeforevercelebratedasthegloriousharbingerofanewsociety.

output answer: It came from the pen of the Frenchman Eugene Pottier, there is an active Pariser Kommune until their crackdown 1871 participated. His verses were then 1888 set to music by the Belgian Pierre Degeyter. Karl Marx wrote to the General Council of the International Working Men's Association at the time: "Working men's Paris, with his commune, will be for ever celebrated as the glorious harbinger of a new society.

input question: Fix spacing: Duplexapartmentwithaterraceof30sqmandaninteriorsurfaceareaofabout85sqmonthegroundfloor.

output answer:
Duplex apartment with a terrace of 30 sq m and an interior surface area of about 85 sq m on the ground floor.