efine the Artist class with a constructor to initialize an artist's information and a print_info() method. The constructor should by default initialize the artist's name to "unknown" and the years of birth and death to -1. print_info() displays "Artist:", then a space, then the artist's name, then another space, then the birth and death dates in one of three formats:
(XXXX to YYYY) if both the birth and death years are nonnegative
(XXXX to present) if the birth year is nonnegative and the death year is negative
(unknown) otherwise
Define the Artwork class with a constructor to initialize an artwork's information and a print_info() method. The constructor should by default initialize the title to "unknown", the year created to -1, and the artist to use the Artist default constructor parameter value