LIMITED POWER OF ATTORNEY
KNOW ALL MEN BY THESE PRESENTS, that the undersigned constitutes and appoints
Thomas Walker, his true and lawful attorney-in-fact and agent, with full power
of substitution and resubstitution, for him, for the sole purpose of signing on
his behalf any and all Regulatory Filings under the Securities Act of 1933, the
Securities Exchange Act of 1934, the Investment Advisers Act of 1940 and any
amendments and supplements thereto, and to file the same, with all exhibits
thereto, and other documents in connection therewith, with the Securities and
Exchange Commission, granting unto said attorney-in-fact and agent, full power
and authority to do and perform each and every act and thing requisite and
necessary to accomplish the above, as fully as to all intents and purposes as he
might or could do in person, hereby ratifying and confirming all that said
attorney-in-fact and agent, and may lawfully do or cause to be done by virtue
hereof. This Power of Attorney shall continue effective until revoked by me at
any time.
Dated this 1st day of June, 2018.
By: /s/ Zachary Sternberg
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Zachary Sternberg