Input: (CNN) -- English club Chelsea have completed the signing of Oriol Romeu from Spanish and European champions Barcelona. The 19-year-old is currently playing for Spain at the World Under-20 Championships in Colombia and has signed a four-year deal with last season's Premier League runners-up. The deal is worth $7 million and includes a buy back clause, set at $14 million after the first year and $21 million after the second. Romeu started his career at Barcelona's city rivals Espanyol before joining the Camp Nou academy in 2004. The midfielder, who can also play in central defence, made his debut for Barcelona in last season's Spanish Supercup match with Seville and got his first taste of league action against Deportivo in May 2010. He has played 90 minutes in both of Spain's games at the World Under-20 Championships, when they beat Costa Rica and Ecuador. Chelsea official web site confirmed the signing and said Romeu is "renowned for his strength and his expansive passing ability." Another player leaving Barcelona is Jeffren Suarez after he agreed to join Sporting Lisbon. The Portuguese outfit have paid $5 million for the 23-year-old which, like the Romeu deal, includes a buy back option. Jeffren joined Barca from Tenerife in 2004 and made his debut for the Catalan club in the 2006-07 season.
"Which 19-year-old, who currently plays for Spain, has been signed by a team in England?" is "Oriol Romeu"?

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Output: yes
Input: On Thursday Fort Waelhem succumbed after a magnificent resistance. The garrison held it until it was a mere heap of ruins, and, indeed, they had the greatest difficulty in making their way out. I think that there is very little doubt that the Germans were using against these forts their largest guns, the great 42-centimetre howitzers. It is known that two of these were brought northwards past Brussels after the fall of Maubeuge, and a fragment which was given to us was almost conclusive. It was brought to us one morning as an offering by a grateful patient, and it came from the neighbourhood of Fort Waelhem. It was a mass of polished steel two feet long, a foot wide, and three inches thick, and it weighed about fifty pounds. It was very irregular in shape, with edges sharp as razors, without a particle of rust upon it. It had been picked up where it fell still hot, and it was by far the finest fragment of shell I have ever seen. Alas we had to leave it behind, and it lies buried in a back-garden beside our hospital. Some day it will be dug up, and will be exhibited as conclusive evidence that the Germans did use their big guns in shelling the town.
"How was the gun fragment found? (By whom, where, in what condition?)" is "Was found by garrison in Fort Waelhem thus it was hot"?

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Output: yes
Input: Breathing is the process of moving air into and out of the lungs. The process depends on a muscle called the diaphragm. This is a large, sheet-like muscle below the lungs. Inhaling, or breathing in, occurs when the diaphragm muscle tightens. This increases the size of the chest. This too decreases air pressure inside the lungs. This action allows air and gases to enter the lungs. Exhaling, or breathing out, occurs when the diaphragm muscle relaxes. This decreases the size of the chest. This increases air pressure inside the lungs. This action allows for air to leave the lungs. When you inhale, air enters the respiratory system through your nose and ends up in your lungs, where gas exchange with the blood takes place. What happens to the air along the way? In the nose, mucus and hairs trap any dust or other particles in the air. The air is also warmed and moistened. Next, air passes through a passageway that is connected to the windpipe. The air then finds its way to the lungs. In the chest, the windpipe splits so that air enters both the right and left lung.
"When you exhale, why does air leave your lungs?" is "Due to increase in air pressure"?

OPTIONS:
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Output:
yes