title: How to parse substring between last set of parentheses in string in ruby
body: <p>In my ruby on rails app, I am trying to build a parser to extract some metadata out of a string.</p>
  
  <p>Let's say the sample string is:</p>
  
  <blockquote>
    <p>The quick red fox (frank,10) jumped
    over the lazy brown dog (ralph, 20).</p>
  </blockquote>
  
  <p>I want to extract the substring out of the last occurence of the ( ).</p>
  
  <p>So, I want to get "ralph, 20" no matter how many ( ) are in the string.</p>
  
  <p>Is there a best way to create this ruby string extraction ... regexp?</p>
  
  <p>Thanks,</p>
  
  <p>John</p>