/usr/share/php/PicoFeed/Rules/fastcoexist.com.php is in php-picofeed 0.1.18-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14  | <?php
return array(
    'grabber' => array(
        '%.*%' => array(
            'test_url' => 'http://www.fastcoexist.com/3026114/take-a-seat-on-this-gates-funded-future-toilet-that-will-change-how-we-think-about-poop',
            'body' => array(
                '//article[contains(@class, "body prose")]',
            ),
            'strip' => array(
            ),
        ),
    ),
);
 |