Mrs. Harris wishes to sue Forklift Systems, Inc. of Nashville, Tennessee, for sexual harassment under Title VII. Mrs. Harris fails to go to the Equal Employment Opportunity Commission to get her right-to-sue letter against Forklift Systems, Inc. She therefore does not have a viable Title VII cause of action against Forklift. She does, however, have her rights under Tennessee's equal employment statute and various court decisions from Tennessee courts regarding sexual harassment. Forklift is incorporated in Tennessee and has its principal place of business in Nashville. Mrs. Harris is also a citizen of Tennessee. Explain why, if she brings her employment discrimination and sexual harassment lawsuit in a federal court, her lawsuit will be dismissed for lack of subject matter jurisdiction.