In this task, you are given a sentence in the english language. Here, your job is to convert english sentence into the bulgarian language.

Well, to some extent, this is true, but not entirely.
До известна степен това е вярно, но не напълно.

In 2005 it was followed by a White Paper.
През 2005 г. тя беше последвана от Бяла книга.

I only wanted to be sure.

Исках само да съм сигурен.