Input:

Irfan Khoosat (Urdu: ) is a Pakistani actor, producer and a well-known comedian. He is famous for his comic role as "Hawaldar Karamdad" in the TV series Andhera Ujala in which he portrayed simpleton and blabbermouth character of a low-ranked policeman. He is also known as stage comedian. He also won Nigar Award for his comic role in 1985 film "Hum se hai zamana".

Sentence: Irfan is known by all.

Output: It's impossible to say

Input:

Louis S. Peterson (June 17, 1922 April 27, 1998) was a playwright, actor, screenwriter, and professor. He was an American playwright and the first African-American playwright to have a dramatic play produced on Broadway. He was also one of the first African-American writers to be nominated for an Emmy Award.

Sentence: Louis Peterson died due to cancer

Output: It's impossible to say

Input:

The Forum Shops at Caesars (also known as simply The Forum) is a major 636000 sqft shopping mall connected to Caesars Palace on the Las Vegas Strip in Las Vegas, Nevada. Measured in terms of sales per square foot, it is the highest grossing mall in the United States.

Sentence: The Forum Shops at Caesars is a very successful mall

Output: Yes

Input:

Project Gasbuggy was an underground nuclear detonation carried out by the United States Atomic Energy Commission on December 10, 1967 in rural northern New Mexico. It was part of Operation Plowshare, a program designed to find peaceful uses for nuclear explosions.

Sentence: Project Gasbuggy caused radiation poisoning.

Output:
It's impossible to say