Complex sentence: To allow for these repairs, G service ran only between Nassau Avenue and Church Avenue for twelve weekends between July and December 2013 and all times between July 25 and September 2,2014.
Split into simpler sentences: To allow for these repairs, G service ran only between Nassau Avenue and Church Avenue for twelve weekends between July and December 2013. This schedule was also in effect daily between July 25 and September 2,2014.