Fix lack of coherence in the sentence: Connecting the neighborhood south of Lake Union with the transit core of downtown Seattle, it operates every 15 minutes and is served by three low-floor streetcars of the same type as some of those in Portland.
It connects the neighborhood south of Lake Union with the transit core of downtown Seattle. It operates every 15 minutes and is served by three low-floor streetcars of the same type as some of those in Portland.