Complex sentence: The neighborhood straddles the Amtrak rail lines which lie just east of Post Road, and its boundaries are Neptune Street to the north, Alger Avenue to the south, Post Road to the west, and Greenwich Bay to the east.
Split into simpler sentences: The neighborhood straddles the Amtrak rail lines, which lie just east of Post Road. Its boundaries are Neptune Street to the north, Alger Avenue to the south, Post Road to the west and Greenwich Bay to the east.