input question: Fix spacing: So,ifIrememberright,thesetofallpositiveintegersisthesamecardinalityasthesetofall(positiveandnegative)integers.

output answer: So, if I remember right, the set of all positive integers is the same cardinality as the set of all (positive and negative) integers.
Problem: ThedriverknowssomeGermanwords,andthetripcosts"sieben"Euro.
What's a sentence that uses these characters?
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The driver knows some German words, and the trip costs "sieben" Euro.
Add spaces: Thetilesaremanufacturedfromhighdensity,3rdgenerationglasswoolwhichallowtheproducttobeformedtotherequiredshape.

Answer: The tiles are manufactured from high density, 3rd generation glass wool which allow the product to be formed to the required shape.
TheEUhas28membercountries.

The EU has 28 member countries.
[Q]: [TheProtocolsof1905foretoldthatthenation-stateswouldnotbeallowedto"contendwithsedition"bytreatingitascrimeandthis"forecast"alsowasfulfilled.]
[A]: [The Protocols of 1905 foretold that the nation-states would not be allowed to "contend with sedition" by treating it as crime and this "forecast" also was fulfilled.]
Problem: Add spaces: ThecompanydomicileisinLeipzig,Germany.TheCOMPAREXHoldingbundlesthegroup-wideresponsibilityforstrategicbusinessdevelopmentandthecorporatebusinessdivisions,aswellasfurtherfunctionssuchasGlobalAccountManagement,InternationalMarketingandCommunications,InvestorRelations,BusinessAnalysis,AccountingandHumanResources.

Spaces added:
The company domicile is in Leipzig, Germany. The COMPAREX Holding bundles the group-wide responsibility for strategic business development and the corporate business divisions, as well as further functions such as Global Account Management, International Marketing and Communications, Investor Relations, Business Analysis, Accounting and Human Resources.