$_ = "The first recorded efforts to reach Everest's summit were made by British mountaineers	";
/summit|Everest|mountain/;
print $&;  #Result is "Everest"

##</code><code>##

$_ = "The first recorded efforts to reach Everest's summit were made by British mountaineers	";
/summit(?{print "11"})|Everest(?{print "22"})|mountain(?{print "33"})/;
print $&;  #22Everest