Please capitalize where necessary: most young people speak english, whilst older people speak better german.
A: Most young people speak English, whilst older people speak better German.

Q: tip: while working through the espalier shoots, also keep an eye on the amount of fruit.

A: Tip: While working through the espalier shoots, also keep an eye on the amount of fruit.

Q: member state representatives meet in brussels for the formal opening of an intergovernmental conference (igc) on a draft reform treaty to amend the eu treaties.
A: Member state representatives meet in Brussels for the formal opening of an intergovernmental conference (IGC) on a draft reform Treaty to amend the EU Treaties.

Problem: a new millionaire has been made at intercasino! the legendary 'millionaires club' slot machine has done it again a new winner has just scooped just under $1,000,000! the latest to join the millionaire club ...
Can you repeat this sentence, but capitalize it?
Answer: A new millionaire has been made at InterCasino! The legendary 'Millionaires Club' slot machine has done it again a new winner has just scooped just under $1,000,000! The latest to join the Millionaire Club ...

Text: london, archibald constable & co., 1907.

Correct capitalization: London, Archibald Constable & Co., 1907.

Problem: accidental formatting of the memory card on the mac machine: you may lose your important files forever if you unintentionally format your memory card on your system.
Can you repeat this sentence, but capitalize it?
Answer:
Accidental formatting of the memory card on the Mac machine: You may lose your important files forever if you unintentionally format your memory card on your system.