title: how eliminate corresponding list elements of 2 columns?
body: <p>I have a data frame.Two columns (they are lists of items) are related, in one of them I have name and the other one their score. How I can eliminate score less than 0.2 and their corresponding name?</p>
  <pre><code>A           B 
  ['summer','winter','fall','water','sun']  [0.1,0.5,0.4,0.01,0.3]
  ['winter','ear','Hi']  [0.5,0.1,0.3]
  </code></pre>
  <p>So the output is</p>
  <pre><code>A           B 
  ['winter','fall','sun']  [0.5,0.4,0.3]
  ['winter','Hi']  [0.5,0.3]
  </code></pre>