Does This Lease Clause Mean That The Tenant Pays The Taxes?

[William Coet]

The lease is for commercial use by a medical tenant.  I'm trying to determine if it implies that the tenant pays the property taxes.

"Additional Rent: During the term of this lease, tenant shall pay landlord, in monthly installments, a sum equal to the tenants pro rata share (as hereinafter defined) of any real estate taxes and annual operating expenses, each as hereinafter defined.  All such monthly installments shall be one-twelfth (1/12th) of the annual pro rata share of such real estate taxes and annual operating expenses as estimated by landlord."