Input:

Several politico-constitutional arrangements use reserved political positions, especially when endeavoring to ensure the rights of minorities or preserving a political balance of power. These arrangements can distort the democratic principle of "one person - one vote" in order to address special circumstances.

Sentence: reserved political positions exist

Output: Yes

Input:

Jefferies LLC is an American global investment bank and institutional securities firm headquartered in New York. The firm provides clients with capital markets and financial advisory services, institutional brokerage, securities research, and asset management. This includes mergers and acquisitions, restructuring, and other financial advisory services.

Sentence: The most comfortable shoes are nikes.

Output: It's impossible to say

Input:

Vladislav Adolfovitch Rusanov (Russian: ) is a fantasy writer, candidate of technical sciences (1999). Writes in Russian language. Also is known for translations of fantasy and romantic poetry into Russian. Formerly a Ukrainian citizen he now identifies with the Donetsk People's Republic.

Sentence: Vladislav Adolfovitch Rusanov attended school in Russia

Output: It's impossible to say

Input:

Kubert Leung is a musician and Cantopop songwriter in Hong Kong. He is one of the pioneers of Cantopop bands who has set up Life Exhibition and Ukiyo-e , two important Hong Kong bands in 1980s. Later, Kubert Leung became a main songwriter for singer Candy Lo. He has also written songs for Faye Wong, Hacken Lee, Miriam Yeung, Anthony Wong, Bibi Zhou among others.

Sentence: Kubert Leung has written more than six songs.

Output:
Yes