<documents_info>The Science of Baseball Batting,History of Protective Gear in American Football,Nutritional Needs of Marathon Runners,Psychological Effects of Extreme Sports,The Physics of Swimming</documents_info>
<query>How has the design of football helmets evolved to improve player safety according to the provided documents?</query>
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<documents_info>The Science of Baseball Batting,History of Protective Gear in American Football,Nutritional Needs of Marathon Runners,Psychological Effects of Extreme Sports,The Physics of Swimming</documents_info>
<query>How has the design of football helmets evolved to improve player safety according to the provided documents?</query>
user
Chunk
assistant
<query>How has the design of football helmets evolved to improve player safety according to the provided documents?</query>
<documents_info>The Science of Baseball Batting,History of Protective Gear in American Football,Nutritional Needs of Marathon Runners,Psychological Effects of Extreme Sports,The Physics of Swimming</documents_info>