In this task, you will be presented with a context passage, a question about that paragraph, and a possible answer to that question. The task is to check the validity of the answer. Answer with "Yes" or "No".

Ex Input:
Density is also an important physical property of matter. The concept of density combines what we know about an objects mass and volume. Density reflects how closely packed the particles of matter are. When particles are packed together more tightly, matter is more dense. Differences in density of matter explain many phenomena. It explains why helium balloons rise. It explains why currents such as the Gulf Stream flow through the oceans. It explains why some things float in or sink. You can see this in action by pouring vegetable oil into water. You can see a colorful demonstration in this video. <sep>What physical property of matter combines what we know about an object's mass and volume?<sep>Gravity

Ex Output:
No

Ex Input:
Dylan and Jez are two orphans who meet in their twenties and vow to achieve their shared childhood dream of living in a stately home . In pursuit of this dream they spend their days living in a disused gas holder , spending as little money as possible and conning the upper classes out of their riches . During one of their biggest cons , their lives are touched by Georgie , who needs money to save the Down's syndrome foundation that her brother attends . When a con goes wrong , the two find themselves in gaol to be released only after their entire fortune is rendered useless because of a recall of 50 notes . It is down to an elaborate plan involving Dylan , Jez and Georgie , to break them out of gaol in order to save their dream . The film , in essence , is part Ealing comedy , part underdog farce with a sequence of madcap adventures set against a striking soundtrack by contemporary Britpop artists . Unlike straight rom-coms or mainstream comedies of the period Shooting Fish contained a generous blending of fact and fantasy . <sep>Why were they conning the rich and living in a disused gas holder?<sep>Live in stable upper class

Ex Output:
No

Ex Input:
The film begins with Brick Bardo ( Tim Thomerson , from ( ( Dollman hitchhiking to get to the town of Pahoota , where he tries to find a girl named Nurse Ginger ( Melissa Behr , who was shrunken to 11 inches in ( ( Bad Channels , to prove to her that she's not alone . Meanwhile , the film cuts to Judith Grey , who has a nightmare about the events that happened in the previous film a year before . Ever since the events that took place a year before , Judith has been watching the Toyland Warehouse , believing that the toys are still alive . Meanwhile , a bum breaks into the Warehouse , and starts to mess around with a clown tricycle , until he gets knocked in the head with a box of toys , causing him to hit his head on the ground , killing him . However , his blood continues to flow over to the place where the demon was buried , and brings back : Baby Oopsie Daisy , Jack Attack , Mr. Static , and this time brings up a new killer toy named Zombietoid , a blonde GI JOE action figure with a sword as a weapon . Judith , who's now inside the building , finally sees the toys in full view , but is then arrested for breaking into a secluded building . After the police leave , the toys force the new security guard Ray Vernon to help them with their needs . Meanwhile , Judith , who now knows about Nurse Ginger and Brick Bardo's history , bribes a news reporter to tell her where they 're at , and tells her they are in Pahoota . Judith , after having a deal with Bardo and Ginger to help her kill the toys , they head off back to the Warehouse . <sep>Where does the bum's flowing blood spread to after he is killed?<sep>To the place where the demon was buried

Ex Output:
Yes