sentence 1: How do I know if I'm good?
 sentence 2: How do I know what I'm good at? sentence 1: What is the average bit rate of a HD video?
 sentence 2: How many gigs does it take to film 1.5 hrs of HD video? sentence 1: How much sleep does one require?
 sentence 2: How much deep sleep one need? sentence 1: How is the pan pizza and a normal crust pizza is made? What is the difference between these two?
 sentence 2: How many slices are normally in an 18 inch pizza? sentence 1: What percent of online display inventory currently sold through exchanges?
 sentence 2: How much was spent on online search and display ads in 2010?
not same meaning
not same meaning
same meaning
not same meaning
not same meaning