Context: On April 15, 2013, two Chechen Islamist brothers exploded two bombs near the finish line of the Boston Marathon, killing three people and injuring roughly 264.

Question: On what date did bombs go off at the Boston marathon?
Answer: April 15, 2013

Question: At what point of the Marathon were the bombs exploded?
Answer: near the finish line

Question: How many fatalities were there at the marathon?
Answer: three

Question: About how many people were injured in the explosion?
Answer: 264