Problem: (CNN) -- Serena Williams will return to competitive tennis after nearly a year on the sidelines in the WTA tournament at Eastbourne, which starts Saturday.

The former world number one has endured a torrid time since being sidelined with a foot injury after winning her fourth Wimbledon crown last July.

Several aborted attempts at a comeback were followed by a major health scare in February as she suffered a blood clot on her lung.

It led to speculation that her glittering career could be over, but Williams has recovered to take her place as a wild card in the grass court event at the south coast of England resort.

"I am so excited to be healthy enough to compete again," she told the tournament's official website.

"These past twelve months have been extremely tough and character building. I have so much to be grateful for. I'm thankful to my family, friends, and fans for all of their support. Serena's back!"

Serena will be joined in the traditional pre-Wimbledon warm-up tournament by her older sister Venus, who is also returning to action after an extended injury layoff.

Venus has been sidelined since injuring her hip at the Australian Open in January.

They will take their place in a top-class line-up which has 13 of the top 20 players in the WTA world rankings, including new French Open champion Li Na of China.

13-time grand slam champion Serena returned to practice in April, but decided against returning for the second grand slam season of the season in Paris.
1. Who was injured in January?
2. Who is her sister?
3. How many championships does she have?
4. How many Wimbledon wins does she have?
5. Was she injured?
6. When?
7. Was she healthy after that?
8. What was the issue?
9. What was her sisters injury?
10. When is the new tournament?
11. Where?
Answer: 1. Venus
2. Serena
3. 13
4. four
5. yes
6. July
7. No
8. a blood clot
9. her hip
10. Saturday.
11. Eastbourne

Problem: Leonhard Euler ( ; ; ; 15 April 170718 September 1783) was a Swiss mathematician, physicist, astronomer, logician and engineer who made important and influential discoveries in many branches of mathematics like infinitesimal calculus and graph theory while also making pioneering contributions to several branches such as topology and analytic number theory. He also introduced much of the modern mathematical terminology and notation, particularly for mathematical analysis, such as the notion of a mathematical function. He is also known for his work in mechanics, fluid dynamics, optics, astronomy, and music theory.

Euler was one of the most eminent mathematicians of the 18th century, and is held to be one of the greatest in history. He is also widely considered to be the most prolific mathematician of all time. His collected works fill 60 to 80 quarto volumes, more than anybody in the field. He spent most of his adult life in Saint Petersburg, Russia, and in Berlin, then the capital of Prussia.

A statement attributed to Pierre-Simon Laplace expresses Euler's influence on mathematics: "Read Euler, read Euler, he is the master of us all."

Leonhard Euler was born on 15 April 1707, in Basel, Switzerland to Paul III Euler, a pastor of the Reformed Church, and Marguerite Brucker, a pastor's daughter. He had two younger sisters: Anna Maria and Maria Magdalena, and a younger brother Johann Heinrich. Soon after the birth of Leonhard, the Eulers moved from Basel to the town of Riehen, where Euler spent most of his childhood. Paul Euler was a friend of the Bernoulli family; Johann Bernoulli was then regarded as Europe's foremost mathematician, and would eventually be the most important influence on young Leonhard.
1. What important branches of science did Leonhard Euler make important discoveries in?
2. What year was he born?
3. How many volumes did his work contain?
4. What is the name of Eiler's father?
5. Where did he spend most of his adult life?
6. What is the name of Europe's foremost mathematician he was friends with?
7. What was Berlin the capital of?
8. Did Eluer have any siblings?
9. What area of study did Euler introduce much of the modern terminology and notation for?
10. What was the town Euler spent most of his childhood in?
Answer: 1. mechanics, fluid dynamics, optics, astronomy, and music theory
2. 1707
3. 60 to 80
4. Paul III Euler
5. Saint Petersburg, Russia, and Berlin
6. Pierre-Simon Laplace
7. Prussia
8. yes
9. mathematical analysis
10. Riehen

Problem: (CNN) -- A former Utah policeman is a suspect in at least three of Monday's four rush-hour shootings near Dallas, Texas, including one of two fatal attacks, police said Tuesday.

CNN affiliate KSL in Salt Lake City, Utah, provided this file photo of the Dallas suspect, Brian Smith.

The suspect, Brian Smith, tried to commit suicide after the Monday-evening shootings and was in a hospital in serious condition, Dallas police detective Lt. Craig Miller said.

Police used ballistic tests to link Smith, a Utah state police officer for 12 years, to the shootings in which one driver was killed, one was injured by shattered glass and one escaped uninjured, Dallas police detective Lt. Craig Miller said.

Miller said it is unclear if Smith was involved in the other fatal shooting, which was the first attack of the evening.

Four motorists were attacked along a three-mile stretch near and on the LBJ Freeway, about 10 miles northeast of downtown Dallas, on Monday evening, police said.

The first attack, which happened in Garland, Texas, about 5:41 p.m., killed Jorge Lopez. Garland police said Lopez, 20, was sitting in his Nissan at a traffic light when a man in a pickup pulled alongside him and fired shots into his car, killing him. A few minutes after the Garland shooting and two miles away on LBJ Freeway, a gunman fired at two tractor-trailers.

While one driver escaped injuries, William Scott Miller, 42, of Frankfort, Kentucky, was shot to death behind the wheel of a United Van Lines truck, police said.
1. Who was killed driving in a United Van Lines truck?
2. Where was near the site of four rush-hour shootings?
3. In what state were they?
4. Who was the suspect?
5. What was Smiths' profession?
6. What did he try to do to himself?
7. How many drivers were attacked on the LBJ?
8. When was that?
9. What did police use to link Smith to the shootings?
10. Where was the first incident?
11. Who died in it?
12. How old was he?
13. What was he doing?
14. Where is the suspect now?
15. How long had he been an officer?
16. In which state?
17. What happened several minutes after the Garland shooting?
18. How old was William Scott Miller?
19. Where was he from?
20. What condition is Smith in?
Answer:
1. William Scott Miller
2. the LBJ Freeway
3. Texas
4. Brian Smith
5. policeman
6. commit suicide
7. Four
8. Monday
9. ballistic tests
10. Garland, Texas
11. Jorge Lopez
12. 20
13. sitting at a traffic light
14. in a hospital
15. 12 years
16. Utah
17. a gunman fired at two tractor-trailers
18. 42
19. Frankfort, Kentucky
20. he died