Library is to book as _is to paintaing

museum

Explanation:

The term library is used to define a place which specifically contains the collection of books and informational resources. These collections helps in gathering information and proceed in the field of research.  

Similarly, art museum is a place that is assigned for the display of paintings and other art works. A collection is kept there for the viewers.

In the given sentence, the connection between a library and a book is similar to that of the museum and painting.

explanation:

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