Based on the information present in the given passage, you need to write a correct answer to the given question. A correct answer is one that correctly and completely answers the question. Do not write answers that address the question partially or incorrectly. The correct answer must be contained in the given paragraph.

Ex Input:
Paragraph- Sent 1: Tim had always a red bike.
Sent 2: His birthday party was coming up and he hoped that his parents would finally get him the bike.
Sent 3: When his friends came over for the party, Tim was very worried that he wouldn't get the bike.
Sent 4: He looked at all the presents and none of them seemed big enough to have a bike in them.
Sent 5: Tim was sad.
Sent 6: When it was time to open the presents he opened them one at a time.
Sent 7: The first present was not a bike.
Sent 8: The second present was not a bike.
Sent 9: The third present was the biggest one.
Sent 10: Tim knew if the bike was going to be in any of the presents it was going to be in this box.
Sent 11: Tim opened it and there was no bike inside.
Sent 12: Just as Tim tried not to look too upset, his Dad brought in the biggest present of them all.
Sent 13: His Dad had been hiding the present all along.
Sent 14: Tim opened it and his new bike was inside the box.
Sent 15: Tim put the bike together with his Dad's help.
Question: Why was Tim excited for his birthday?.

Ex Output:
Wanted Bike.

Ex Input:
Paragraph- Sent 1: Plants also detect the daily cycle of light and darkness.
Sent 2: Do you know how plants respond to these changes?
Sent 3: Some plants open their leaves during the day.
Sent 4: It is during these hours the plant can collect sunlight.
Sent 5: At night, the plant closes its leaves to prevent water loss.
Sent 6: Many plants respond to the change in the length of the day.
Sent 7: As days grow shorter, some plants respond by going dormant.
Sent 8: Dormant is when a plant suspends its growth.
Sent 9: It does this in order to survive.
Sent 10: Shorter days signal the coming of winter.
Sent 11: Winter in most areas means extreme cold.
Sent 12: It is also very dry in the winter months.
Sent 13: As winter approaches, some plants respond by their leaves changing color.
Sent 14: After the change in color, they fall off.
Sent 15: This dormancy period helps trees.
Sent 16: It allows them to survive the cold and dry winter.
Sent 17: Plants only want to grow when conditions are right.
Question: What happens with growth rate in some plants when days grow shorter?.

Ex Output:
In some plants, the growth rate will slow or stop.

Ex Input:
Paragraph- Sent 1: Animated history of the US.
Sent 2: Of course the cartoon is highly oversimplified, and most critics consider it one of the weakest parts of the film.
Sent 3: But it makes a valid claim which you ignore entirely: That the strategy to promote "gun rights" for white people and to outlaw gun possession by black people was a way to uphold racism without letting an openly terrorist organization like the KKK flourish.
Sent 4: Did the 19th century NRA in the southern states promote gun rights for black people?
Sent 5: I highly doubt it.
Sent 6: But if they didn't, one of their functions was to continue the racism of the KKK.
Sent 7: This is the key message of this part of the animation, which is again being ignored by its critics.
Sent 8: Buell shooting in Flint.
Sent 9: You write: "Fact: The little boy was the class thug, already suspended from school for stabbing another kid with a pencil, and had fought with Kayla the day before".
Sent 10: This characterization of a six-year-old as a pencil-stabbing thug is exactly the kind of hysteria that Moore's film warns against.
Sent 11: It is the typical right-wing reaction which looks for simple answers that do not contradict the Republican mindset.
Sent 12: The kid was a little bastard, and the parents were involved in drugs -- case closed.
Sent 13: But why do people deal with drugs?
Sent 14: Because it's so much fun to do so?
Sent 15: It is by now well documented that the CIA tolerated crack sales in US cities to fund the operation of South American "contras" It is equally well known that the so-called "war on drugs" begun under the Nixon administration is a failure which has cost hundreds of billions and made America the world leader in prison population (both in relative and absolute numbers).
Question: It is believed that which group tolerated crack sales raising what other questions>.

Ex Output:
CIA tolerated crack sales, which raises questions about how the epidemic spread in the U.S.