user: What hit song that was used in the Bollywood movie Don actually a reject from an earlier movie.

assistant: The song 'Khaike Pan Banarasi Wala' was actually written for the movie Banarasi Babu for Dev Anand.  However Dev Anand did not use it in his movie.  So it was picturized on Amitabh Bacchan in the movie Don.

user: What kind of animal is the Iolaus crawshayi

assistant: Iolaus crawshayi, the Crawshay's sapphire, is a butterfly in the family Lycaenidae. It is found in Ethiopia, Somalia, Kenya, Uganda, the Democratic Republic of the Congo and Tanzania.
The habitat consists of moist savanna.

The larvae feed on the young leaves of Erianthemum dregei and Phragmanthera usuiensis. They are dull dirty whitish green or brown.

user: What is the meaning of life?

assistant: Although it is a deep question that has challenged philosophers for all time, Douglas Adams in his book "The Hitchhicker's Guide to the Universe" humorously states that the answer is "42".