Parse birth and death dates from Wikipedia?

I'm trying to write a python program that can search wikipedia for the birth and death dates for people.

For example, Albert Einstein was born: 14 March 1879; died: 18 April 1955.

I started with Fetch a Wikipedia article with Python

import urllib2
opener = urllib2.build_opener()
opener.addheaders = [('User-agent', 'Mozilla/5.0')]
infile = opener.open('http://en.wikipedia.org/w/api.php?action=query&prop=revisions&rvprop=content&rvsection=0&titles=Albert_Einstein&format=xml')
page2 = infile.read()

This works as far as it goes. page2 is the xml representation of the section from Albert Einstein's wikipedia page.

And I looked at this tutorial, now that I have the page in xml format... http://www.travisglines.com/web-coding/python-xml-parser-tutorial, but I don't understand how to get the information I want (birth and death dates) out of the xml. I feel like I must be close, and yet, I have no idea how to proceed from here.

EDIT

After a few responses, I've installed BeautifulSoup. I'm now at the stage where I can print:

import BeautifulSoup as BS
soup = BS.BeautifulSoup(page2)
print soup.getText()
{{Infobox scientist
| name        = Albert Einstein
| image       = Einstein 1921 portrait2.jpg
| caption     = Albert Einstein in 1921
| birth_date  = {{Birth date|df=yes|1879|3|14}}
| birth_place = [[Ulm]], [[Kingdom of Württemberg]], [[German Empire]]
| death_date  = {{Death date and age|df=yes|1955|4|18|1879|3|14}}
| death_place = [[Princeton, New Jersey|Princeton]], New Jersey, United States
| spouse      = [[Mileva Marić]] (1903–1919)<br>{{nowrap|[[Elsa Löwenthal]] (1919–1936)}}
| residence