Input:

PDQ Chocolate was a popular drink mix in the 1960s and 1970s. It was manufactured by Ovaltine. It has been sold as "PDQ Chocolate Flavor Beads" and "PDQ Choco Chips." "Egg Nog Flavored PDQ" and "Strawberry PDQ" were also available. These flavored beads and chips were used to mix with milk or to sprinkle over ice cream.

Sentence: The only use for PDQ Chocolate was as an ice cream topping.

Output: No

Input:

Peter R. Arnott (born 1932) is an American composer, theatre director and banjo player. Arnott is a member of the Bohemian Club and has been closely involved with a number of Grove Plays. Arnott is a founding member and banjo player for the Goodtime Washboard Three.

Sentence: Peter R. Arnott only plays the banjo.

Output: It's impossible to say

Input:

PSRB1919+21 is a pulsar with a period of 1.3373 seconds and a pulse width of 0.04 seconds. Discovered by Jocelyn Bell Burnell and Antony Hewish on November 28, 1967, it is the first discovered radio pulsar. The power and regularity of the signals were briefly thought to resemble an extraterrestrial beacon, leading the source to be nicknamed LGM-1 (for "little green men").

Sentence: PSR B1919+21 has a period of 1337.3 ms

Output: Yes

Input:

A CHANT (from Chan"nel T"anker) was a type of prefabricated coastal tanker which was built in the United Kingdom during the Second World War due to a perceived need for coastal tankers after the invasion of France. Some CHANTs were adapted to carry dry cargos. These were known as the Empire F type coasters.

Sentence: CHANT's were built before World War I.

Output:
No