Task: Sentence Expansion
Input (English): Russian human rights activist and dissident Lyudmila Alexeyeva explained glasnost as a word that " had been in the Russian language for centuries .
Output (English): " For centuries " , human rights activist Lyudmila Alexeyeva has explained , the word " glasnost " has been in the Russian language : " It was in the dictionaries and lawbooks as long as there had been dictionaries and lawbooks .