title: Web scraping, getting empty list
body: <p>I have a hard time figuring out a correct path with my web scraping code.</p>
  
  <p>I am trying to scrape different info from <a href="http://financials.morningstar.com/company-profile/c.action?t=AAPL" rel="nofollow">http://financials.morningstar.com/company-profile/c.action?t=AAPL</a>.
  I have tried several paths, and some seem to work and some not.
  I am interested in CIK under Operation Details</p>
  
  <pre><code>page = requests.get('http://financials.morningstar.com/company-profile/c.action?t=AAPL')
  tree=html.fromstring(page.text)
  
  
  #desc = tree.xpath('//div[@class="r_title"]/span[@class="gry"]/text()')  #works
  
  #desc = tree.xpath('//div[@class="wrapper"]//div[@class="headerwrap"]//div[@class="h_Logo"]//div[@class="h_Logo_row1"]//div[@class="greeter"]/text()')    #works
  
  #desc = tree.xpath('//div[@id="OAS_TopLeft"]//script[@type="text/javascript"]/text()')   #works
  
  desc = tree.xpath('//div[@class="col2"]//div[@id="OperationDetails"]//table[@class="r_table1 r_txt2"]//tbody//tr//th[@class="row_lbl"]/text()')
  </code></pre>
  
  <p>I can't figure the last path. It seems like I am following the path correctly, but I get empty list.</p>