Complex sentence: Three new stations would have been built during the first phase of the line, at 99th Street near LeFrak City, at Main Street, and a terminal station at Kissena Boulevard.
Split into simpler sentences: Three new stations would have been built during the first phase of the line. One would have been a 99th Street near LeFrak City, one would have been at Main Street, and the terminal station would have been at Kissena Boulevard.