Input:

The Chandrasekhar family is an Indian intellectual family. Several members of the family have achieved scientific distinction, notably in the field of physics. Two members of the family, Sir C. V. Raman and his nephew, Subrahmanyan Chandrasekhar, were Nobel laureates in physics.

Sentence: C. V. Raman is a Sir.

Output: Yes

Input:

William Gurstelle (born March 29, 1956) is an American nonfiction author, magazine writer, and inventor. He is a feature columnist for "Make" magazine and a columnist and contributing editor at "Popular Science" magazine. Previously, he was the Pyrotechnics and Ballistics Editor at "Popular Mechanics" magazine.

Sentence: William Gurstelle is the best author

Output: It's impossible to say

Input:

Nocturna Artificialia is the first credited film directed and produced by the Brothers Quay, Timothy and Stephen. "This British fraternal directing team is known for their avant-garde puppet films." Rather than dialog, this film uses shadows and music to create the dream-like state of the main character and his journey on a red tram at night.

Sentence: Timothy does not use dialog in his avant-garde puppet films

Output: Yes

Input:

Arlette Roxburgh is a Trinidadian American singer and songwriter. She was born in Trinidad. She is best known for singing The Star-Spangled Banner before every New Jersey Devils home game started. When the Nets were in New Jersey, she also sang the national anthem before their home games at the time as well.

Sentence: Arlette Roxburgh has only ever sung for the New Jersey Devils.

Output:
It's impossible to say