EXHIBIT 99.6 UNIT TWO CONTRACT ASSIGNMENT AND ASSUMPTION AGREEMENT This ASSIGNMENT AND ASSUMPTION OF CONTRACT OF SALE (this "ASSIGNMENT") is made and entered into as of the 25th day of April 2001, by and among DAI-ICHI LIFE INVESTMENT PROPERTIES,...Two Contract Assignment and Assumption Agreement • May 10th, 2001 • Boston Properties Inc • Real estate investment trusts • New York
