# File lib/rouge/lexers/turtle.rb, line 15
      def self.analyze_text(text)
        start = text[0..1000]
        return 0.5 if start =~ %r(@prefix\b)
        return 0.5 if start =~ %r(@base\b)
        return 0.4 if start =~ %r(PREFIX\b)i
        return 0.4 if start =~ %r(BASE\b)i
      end