Obviously we've been following the work of the committee and the witnesses who have appeared before you. I understand that Mr. Mueller would be promoting LEED, as it's his organization involved. At the same time, Mr. Karakasis from BOMA would be speaking about BOMA BESt. Working with Geoff and his team, we've looked at the two methods of certification and it's our view that BOMA BESt works best for our existing inventory and LEED is best for new construction. That's why we have selected the two.
There's a cost and a benefit to certification. There's no question that LEED has succeeded in its branding in North America and has the brand recognition, but they are also much more stringent and more costly to obtain and maintain certification from; it's more time-consuming. So there are pros and cons for each, and that's why we've adopted the different models.