Input:

Luis Walter Alvarez (June 13, 1911 September 1, 1988) was an American experimental physicist, inventor, and professor who was awarded the Nobel Prize in Physics in 1968. The American Journal of Physics commented, "Luis Alvarez was one of the most brilliant and productive experimental physicists of the twentieth century."

Sentence: Luis Walter Alvarez worked with Albert Einstein.

Output: It's impossible to say

Input:

Llangarron is a small village and civil parish in southwest Herefordshire within seven miles of Ross-on-Wye (Herefordshire, England) and Monmouth (Monmouthshire, Wales). The population of the Civil Parish at the 2011 census was 1,053. The church is dedicated to St. Deinst. The village no longer has a post office nor pub, though it does have a hall.

Sentence: The church in Llangarron has a large congregation of 500 people.

Output: It's impossible to say

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A soda gun or bar gun is a device used by bars to serve various types of carbonated and non-carbonated drinks. A soda gun has the ability to serve any beverage that is some combination of syrup, water and carbon dioxide. This includes soft drinks, iced tea, carbonated water, and plain water. When served from a soda gun, these are often known as fountain drinks.

Sentence: It is called a soda gun in some countries while it is called a bar gun or some other countries.

Output: It's impossible to say

Input:

Holger F. Struer was a Danish chemist and founder of "H. Struers Chemiske Laboratorium" (In Danish: "Struers Kemiske Laboratorium") in 1875 at Skindergade 38, the centre of Copenhagen. Struers introduced in 1943 Micropol, a new principle for electrolytic polishing which made the preparation process within metallography more controlled in order to achieve better preparation results.

Sentence: Struer and his closest friend founded the Struers Kemiske Laboratorium.

Output:
It's impossible to say