Q: You are given a paragraph, with numbered sentences, and a question. Write the numbers of the sentences needed to answer the given question. Separate multiple sentence numbers with a comma (", "). E.g. "1, 2" would be the correct response if Sent 1 and Sent 2 are needed to answer the given question (do not include sentences that contain no information that is necessary to answer the question). Sort the sentence numbers in an increasing order (i.e., '1, 2', instead of '2, 1'). Your answer should not contain anything than the sentence numbers separated by a comma (e.g. '1, 2, 3, 4'). The given question requires more than one sentence to answer. So, your answer must contain at least one comma (", ").
Paragraph- Sent 1: (CNN) -- Tiger Woods kick started his 2013 season on his favorite golf course with a seven-under 65 Friday at Torrey Pines lifting him to the top of the leader board in the Farmers Insurance Open.
Sent 2: Defying cold and wet conditions at La Jolla in California, the World No.2 carded a halfway total of 11-under 133 at the PGA Tour event.
Sent 3: It left him two clear of fellow American Billy Horschel, who battled to a 69 on the more difficult South Course.
Sent 4: Woods has won the tournament at the same venue six times and also famously claimed the 2008 U.S. Open, despite being handicapped by injury, Woods, who began his campaign by missing the cut at at European Tour event in Abu Dhabi last week, the same fate befalling No.1 Rory McIlroy, showed that was a mere blip with inspired play on the easier North Course.
Sent 5: Starting from the 10th, his round took off with a birdies on the 14th and 17th and an eagle on the 18th, set up by a superb iron approach.
Sent 6: The American ace started his back nine with straight birdies and as the rain came down he continued his fine progress.
Sent 7: Two birdies came in his final three holes, sandwiching his sole bogey on the day.
Sent 8: Woods said he was delighted to have backed up his fine driving with good recovery play on the rare occasion he was off the fairway.
Sent 9: "I've got my short game back to where I want to have it," he said after his round. 
Question: Who is the World No. 2?.
A:
1, 2.