Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: Barack Obama today took a chance to boast about healthcare reform to a group of six-year-old girls - though admitted that Obamacare is not as impressive as a device for turning the pages of a book. The president, put on the spot by a crowd of Oklahoma Girl Scouts to name something he'd come up with to match their device, plumped for his much-touted healthcare reforms. Obama, who was touring exhibits at the annual White House Science Fair, made the jokey exchange before pledging $240million in federal dollars to boost the study of science and technology. Scroll down for videoPresident was put on the spot to name an achievement by Girl Scout troopInventors, from Tulsa, Oklahoma, wanted to know what he'd brain-stormedHe replied: 'I came up with things like, you know, health care'Obamacare insurance reform laws are five years old todayHe later announced $240million pledge to boost study of science and tech 
 Question:The girls were among 35 young science fair winners who came to the _ to show off their inventions, which ranged from spinal implants to computer password technology.

White House Science Fair