eScience Group, Microsoft Research, Redmond, Washington, United States of America. carlson@microsoft.com|eScience Group, Microsoft Research, Redmond, Washington, United States of America. carlson@microsoft.com|eScience Group, Microsoft Research, Redmond, Washington, United States of America. carlson@microsoft.com|eScience Group, Microsoft Research, Redmond, Washington, United States of America. carlson@microsoft.com|eScience Group, Microsoft Research, Redmond, Washington, United States of America. carlson@microsoft.com|eScience Group, Microsoft Research, Redmond, Washington, United States of America. carlson@microsoft.com|eScience Group, Microsoft Research, Redmond, Washington, United States of America. carlson@microsoft.com|eScience Group, Microsoft Research, Redmond, Washington, United States of America. carlson@microsoft.com|eScience Group, Microsoft Research, Redmond, Washington, United States of America. carlson@microsoft.com|eScience Group, Microsoft Research, Redmond, Washington, United States of America. carlson@microsoft.com|eScience Group, Microsoft Research, Redmond, Washington, United States of America. carlson@microsoft.com