There is no scientific proof however that gelatine should be able to strengthen the nails

Can you repeat this sentence, but add in punctuation?
There is no scientific proof, however, that gelatine should be able to strengthen the nails.
input: He spent a year abroad then in 1903 he returned to become a professor at Moscow University
fixed: He spent a year abroad, then in 1903 he returned to become a professor at Moscow University.
input ---- How to install Relative Strength Oscillatormq4
output ---- How to install Relative Strength Oscillator.mq4?
Add punctuation: The lifts going to the old exhibitions take wheelchairs of 80 cm in width whereas the entry to the Caf lhalle caf and pub is only 75 cm wide
A: The lifts going to the old exhibitions take wheelchairs of 80 cm in width, whereas the entry to the Cafe & lhalle (cafe and pub) is only 75 cm wide.
QUESTION: Fix punctuation: After a year cellars were constructed and the first vintage could be bottled at the domain in 1999 Stephanes sister Isabelle MunozSaurel has worked at the domain since 2005
ANS: After a year cellars were constructed and the first vintage could be bottled at the domain in 1999. Stephane's sister, Isabelle Munoz-Saurel has worked at the domain since 2005.
input ---- Over time your computer accumulates junk files from normal web surfing and computer use If this junk isnt occasionally cleaned out it can cause OnMark 2000 Survey to respond slowly or provides an MAINCTLHLP error possibly due to file conflicts or an overloaded hard drive
output ----
Over time, your computer accumulates junk files from normal web surfing and computer use. If this junk isn't occasionally cleaned out, it can cause OnMark 2000 Survey to respond slowly or provides an MAINCTL.HLP error, possibly due to file conflicts or an overloaded hard drive.