You have to take the given statements to be true even if they seem to be at variance with commonly known facts and then decide which of the given conclusions logically follow(s) from the given statements
1) if only conclusions I follows
2) if only conclusions II follows
3) if either I or II follows
4) if neither I nor II follows
5) if both I and II follow
Statements: All books are pages
All libraries are books
All words are pages
Conclusions: I.All words are books
All libraries are pages

Explanation

2, if only conclusion II follows