input question: Fix spacing: TodayaSpitfireisnotregardedasacomplexfightingaircraft.

output answer: Today a Spitfire is not regarded as a complex fighting aircraft.

input question: Fix spacing: Numerousjacksarealsoavailableforcontrollingtheharmonyfunction,looper,effects,andmoreviaoptionalfootswitches.

output answer: Numerous jacks are also available for controlling the harmony function, looper, effects, and more via optional footswitches.

input question: Fix spacing: Itmayinvolvetheentireventricularsystem(asetofhollowstructuresinthebraincontinuouswiththecentralcanalofthespinalcord),oronlyelementsnexttoasiteofventricularsystemobstruction.

output answer: It may involve the entire ventricular system (a set of hollow structures in the brain continuous with the central canal of the spinal cord), or only elements next to a site of ventricular system obstruction.

input question: Fix spacing: AshortintroductiontothelifeandworkofFrancoisVillon

output answer:
A short introduction to the life and work of Francois Villon