Photo Contest: We own you

[Humanist]

I was thinking of entering a contest until I read the following:

At the time you send any Photo Entry, in whole or in part, to the LCBO, and whether or not your entry is selected as a winner, you irrevocably transfer, convey and assign to the LCBO all right, title and interest in and to your Photo Entry, in whole and in part, and all the intellectual property rights therein, throughout the world in perpetuity, including without limitation any and all copyrights and the registration, renewal, and derivative rights and you waive all moral rights and rights of attribution relating thereto and agree to execute all documents and perform all acts deemed necessary by the LCBO to apply for, register, perfect and record such transfer and assignment and/or waivers and protect LCBO's right in the intellectual property. You further understand and agree that LCBO shall have the exclusive right to apply for or register any patents, mask work rights, copyrights and such other proprietary protections with respect thereto. You will not now nor in the future be paid for your Photo Entry or for granting the LCBO any of these rights. The LCBO, its affiliates, licensees, successors and assigns are in no way obligated to use or continue to use your Photo Entry (and have no obligation to you or any other person or entity after your Photo Entry is received). You agree to waive all claims to and shall receive no royalties of any kind now or in the future from the LCBO, its affiliates, licensees, successors and assigns for use of your Photo Entry including copyright, trademark, public performance, digital sound recording, mechanical, synchronization or master use royalties, and you represent, warrant and agree that no other party is entitled to claim royalties from the use of the Photo Entry as set forth in these Official Rules."

Here is my question: If I submit a file to them that is, say, a 300DPI read-to-print for a 4x6 file, do they own only that file? Or do they own anything connected with the image like my full, higher resolution PSD file?