给定一篇英文文章，要求模型将文章连贯性最差的三句话提取出来，并输出它们。 
文章： 
"Jane was a hardworking student in high school, but when she got to college, she found it hard to keep up with the coursework. She had trouble studying for exams and often found herself procrastinating. Her grades suffered as a result."
"Jane had trouble studying for exams and often found herself procrastinating. Her grades suffered as a result."