Input:

Oceanus ( ; Greek: "Okeanos", ] ), also known as Ogenus ("Ogenos", ) or Ogen (), was a divine figure in classical antiquity, believed by the ancient Greeks and Romans to be the divine personification of the sea, an enormous river encircling the world.

Sentence: Oceanus was worshipped by the Celts

Output: It's impossible to say

Input:

Michelle Do (born 1983) is a Vietnamese-American table tennis player from Milpitas, California. At age 17, Do became the youngest ever member of the U.S. Women's Table Tennis Team, for the 2000 Summer Olympics. She attended Scripps Ranch High School in San Diego, California.

Sentence: Michelle Do has talked to Clinton.

Output: It's impossible to say

Input:

Memento is a 2000 American neo-noir psychological thriller film directed and written by Christopher Nolan, and produced by Suzanne and Jennifer Todd. The film's script was based on a pitch by Jonathan Nolan, who later wrote the story "Memento Mori" from the concept. It stars Guy Pearce, Carrie-Anne Moss, and Joe Pantoliano.

Sentence: Memento has been seen by everybody.

Output: It's impossible to say

Input:

Ahmad Kemal Idris (born Singaraja, Bali, February 10, 1923 died Jakarta, July 28, 2010) was a prominent Indonesian Army general during the 1950s and 1960s. He was an Indonesian guerrilla leader during the Indonesian National Revolution, who in 1949 was involved in continued resistance to the Dutch forces after they occupied Yogyakarta.

Sentence: Ahmad Kemal Idris died at Jakarta.

Output:
Yes