Complex sentence: Astoria Boulevard (also known as Astoria Boulevard--Hoyt Avenue) is an express station on the BMT Astoria Line, it is served by the N train at all times, and by the Q train on weekdays.
Split into simpler sentences: Astoria Boulevard (also known as Astoria Boulevard--Hoyt Avenue) is an express station on the BMT Astoria Line. It is served by the N train at all times, and by the Q train on weekdays.