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 Q]: 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 are some things density explains?<sep>It explains why some things float in or sink
[EX A]: Yes

[EX Q]: Plants also detect the daily cycle of light and darkness. Do you know how plants respond to these changes? Some plants open their leaves during the day. It is during these hours the plant can collect sunlight. At night, the plant closes its leaves to prevent water loss. Many plants respond to the change in the length of the day. As days grow shorter, some plants respond by going dormant. Dormant is when a plant suspends its growth. It does this in order to survive. Shorter days signal the coming of winter. Winter in most areas means extreme cold. It is also very dry in the winter months. As winter approaches, some plants respond by their leaves changing color. After the change in color, they fall off. This dormancy period helps trees. It allows them to survive the cold and dry winter. Plants only want to grow when conditions are right. <sep>Do some plants' leaves fall off in the winter months?<sep>No, they fall off in the autumn only
[EX A]: No

[EX Q]: 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 A]:
No

