the numberso put into perspective, forrester research vice president frank gillett and crawford del prattthere have been questions over the last several years about google's transition and ability to transition to mobile. as the company effectively put those questions to rest? >> they have done a really good job. if you look at our numbers and you think about how the world has changed, from the first quarter of 2014 to the first quarter of 2016, phones with a screen size of 4 1/2 to 5 inches , those have dropped 70% in terms of ship that -- shipments. inches, thoseto 6 are up 200% for that period. why is that important? as the phone gets bigger, people use that phone throughout their day. they live on mobile you don't sit down and google things the way you used to. google is benefiting from that trend. google is also benefiting significantly by keeping things -- search is not necessarily appified. people are searching with google, using google property to search, using google properties to view video on their mobile phones, and that's driving this transition. google is relevant on mobile