Matches in DBpedia 2016-04 for { ?s ?p "In Canada and in the United States, the term football refers to a prolate spheroid ball used in the context of playing Gridiron football. Footballs are often made of cow hide leather, as such a material is required in professional and collegiate football. Footballs used in recreation, and in organised youth leagues, may be made of rubber or plastic materials (the high school football rulebooks still allow the inexpensive all-rubber footballs, though they are less common than leather)."@en }
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- Ball_(gridiron_football) abstract "In Canada and in the United States, the term football refers to a prolate spheroid ball used in the context of playing Gridiron football. Footballs are often made of cow hide leather, as such a material is required in professional and collegiate football. Footballs used in recreation, and in organised youth leagues, may be made of rubber or plastic materials (the high school football rulebooks still allow the inexpensive all-rubber footballs, though they are less common than leather).".
- Q22095306 abstract "In Canada and in the United States, the term football refers to a prolate spheroid ball used in the context of playing Gridiron football. Footballs are often made of cow hide leather, as such a material is required in professional and collegiate football. Footballs used in recreation, and in organised youth leagues, may be made of rubber or plastic materials (the high school football rulebooks still allow the inexpensive all-rubber footballs, though they are less common than leather).".
- Ball_(gridiron_football) comment "In Canada and in the United States, the term football refers to a prolate spheroid ball used in the context of playing Gridiron football. Footballs are often made of cow hide leather, as such a material is required in professional and collegiate football. Footballs used in recreation, and in organised youth leagues, may be made of rubber or plastic materials (the high school football rulebooks still allow the inexpensive all-rubber footballs, though they are less common than leather).".
- Q22095306 comment "In Canada and in the United States, the term football refers to a prolate spheroid ball used in the context of playing Gridiron football. Footballs are often made of cow hide leather, as such a material is required in professional and collegiate football. Footballs used in recreation, and in organised youth leagues, may be made of rubber or plastic materials (the high school football rulebooks still allow the inexpensive all-rubber footballs, though they are less common than leather).".