question: prof. retzke has written six specialized books and more than 300 scientific publications in germany and abroad.
Capitalize this past sentence correctly.
A: Prof. Retzke has written six specialized books and more than 300 scientific publications in Germany and abroad.

question: when you book you will not be asked to send money: the credit card will only be used for guaranteeing your booking.
Capitalize this past sentence correctly.
A: When you book you will not be asked to send money: the credit card will only be used for guaranteeing your booking.

question: debian voting information / 2002 / debian project leader elections 2002
Capitalize this past sentence correctly.
A: Debian Voting Information / 2002 / Debian Project Leader Elections 2002