source: The Sheppard line currently has fewer users than the other two subway lines, and shorter trains are run.
target: The Sheppard line has less users than the other two subway lines. Shorter trains are run..
references: The Sheppard line has less users than the other two subway lines. Shorter trains are run.. The Sheppard line  less users than the other two subway lines. The Sheppard line has less riders and shorter trains. The Sheppard line now has fewer riders than the other two subway lines.  Therefore, shorter trains run. Currently, The Sheppard line has less users than the other two subway lines and they run shorter trains. The Sheppard subway line has fewer users than the other two subway lines. It runs shorter trains. The Sheppard line is less used than the other two subway lines. Because of this, shorter trains are used. The Sheppard line runs shorter trains. It also runs fewer trains than other subway lines. The Sheppard line has less users than the other underground trains and shorter trains are run. The Sheppard line has shorter trains and less users than the other two subway lines.