input question: Fix spacing: Childrenfrom2to17yearsoldcanjoinFinnairPlusJunior.

output answer: Children from 2 to 17 years old can join Finnair Plus Junior.

input question: Fix spacing: octoprint:Responsivewebinterfacefor3Dprinters,784daysinpreparation,lastactivity539daysago.

output answer: octoprint: Responsive web interface for 3D printers, 784 days in preparation, last activity 539 days ago.

input question: Fix spacing: Itismid-waybetweenAustraliaandtheSouthSeatoEngland;betweenChili,Peru,&c.,andtheRioPlataandtheRiodeJaneiro.

output answer: It is mid-way between Australia and the South Sea to England; between Chili, Peru, &c., and the Rio Plata and the Rio de Janeiro.

input question: Fix spacing: Onemustnotletone'sdarkstreamofthoughtcauseotherstosuffer.

output answer:
One must not let one's dark stream of thought cause others to suffer.