Getting Facebook picture in large format

I'm trying to extract a picture from a post on my page, but I only seem to get it in a small/normal size, and I need it to be large.

I've tried:

$facebook->api('/' . FACEBOOK_PAGE_ID . '/feed?fields=picture,type,link');

And:

$facebook->api('/' . PICTURE_OBJECT_ID . '/?type=large');

But these both return this, even though it exists much larger: http://ift.tt/1GtH02D

How do I get it out as a large picture?