Question: What is a private research university in Worcester, Massachusetts, focusing on the instruction and research of technical arts and applied sciences, Worcester Polytechnic Institute or Ohio Northern University?
Context: Claude W. Pettit College of Law, commonly referred to as ONU Law, is a private, non-profit law school located in Ada, Ohio.  Also known as the Ohio Northern University Pettit College of Law or ONU College of Law, it is the law school of Ohio Northern University, founded in 1871. Kajaani University of Applied Sciences (KUAS, in Finnish: Kajaanin ammattikorkeakoulu, KAMK) is a small university of applied sciences located in the town of Kajaani.  There are approximately 2000 students and 230 members of staff at KUAS.  Kajaani University of Applied Sciences has achieved success nationally in Ministry of Education and Culture outcome barometers where the quality of teaching and counseling has been considered the best in Finland for several years running.  Based on a survey published in Talouselämä -newspaper in 2011, KUAS was ranked as Finland's best university of applied sciences.  KUAS' quality management system was among the first to be audited and approved in 2007.  On Kajaani University of Applied Sciences' integrated campus area all student services are close to each other.  The campus, located just a short walk away from the town centre, is surrounded by nature and different kinds of sports facilities. Dr. Domenico Grasso (b. 1955 Worcester, Massachusetts) is Provost of the University of Delaware (UD).  Prior to holding this position, he was Vice President for Research and Dean of the Graduate College at the University of Vermont (UVM).  He did his secondary school education at St. John's High School (Massachusetts) and holds a B.Sc.  from Worcester Polytechnic Institute, an M.S. from Purdue University and a Ph.D. from the University of Michigan.  He is a registered Professional Engineer in the states of Connecticut and Texas, and a Diplomate of the American Academy of Environmental Engineers. Established in 1985, The Center for Wireless Information Network Studies (CWINS), Worcester Polytechnic Institute, Worcester, Massachusetts, is a compact wireless research laboratory with a successful history of research alliances with other industrial and academic groups.  The center has performed research for government agencies and has close ties with the world-leading organizations in the wireless industry. Stephen Salisbury III (1835 – 1905), also referred to as Stephen Salisbury, Jr., graduated from Harvard College in 1856.  The son of a wealthy landowner, Salisbury helped manage the family's extensive properties and businesses in Worcester County, Massachusetts.  Like his father, Salisbury served one term in the State Senate, was president of the Worcester National Bank, and directed the Worcester & Nashua Railroad.  He was a trustee of the Worcester City Hospital and the Worcester Polytechnic Institute. Ichabod Washburn (1798–1868) was a church deacon and industrialist from Worcester County, Massachusetts, United States.  His financial endowments led to the naming of Washburn University in Topeka, Kansas and the foundation of Worcester Polytechnic Institute in Worcester, Massachusetts. The Northern Alberta Institute of Technology (NAIT) is a polytechnic and applied sciences institute located in Edmonton, Alberta, Canada.  NAIT provides careers programs in applied research, technical training, applied education, and learning designed to meet the demands of Alberta's technical and knowledge-based industries.  NAIT offers approximately 140 credit programs leading to applied degrees, diplomas and certificates.  There are approximately 8,400 full-time students, 20,500 students in continuing education and part-time studies, 12,300 apprentices anticipated for 2012, and more than 20,000 registrants for customized corporate based training.  NAIT also attracts international students from 77 countries.  NAIT is similar to an Institute of technology or university of applied sciences as termed in other jurisdictions.  The university press, The Nugget, is a member of CUP. The Piraeus University of Applied Sciences (Greek: Ανώτατο Εκπαιδευτικό Ίδρυμα Πειραιά Τεχνολογικού Τομέα , A.E.I. Πειραιά Τ.Τ.)  also known as Technological Education Institute of Piraeus was created by a special law in 1976 as a merging result of the "Anastasiadis School" (founded in 1947) and the "Sivitanidios School" (founded in 1957), and was established with the 1983 related law (Ν.1404/1983).  The University provides a high level of technological education and applied research in the equivalent taught areas.  The Piraeus University of Applied Sciences offers more than twenty different degrees ranging from the fields of applied science and engineering to those in Economics and Business Administration.  Reserving standing partnerships with other domestic or foreign educational and research institutions, Piraeus University of Applied Sciences continuously improves its educational level.  The Foundation also participates in many European programs such as the "Erasmus", internationally cooperating and disseminating academic knowledge. Worcester Polytechnic Institute (WPI) is a private research university in Worcester, Massachusetts, focusing on the instruction and research of technical arts and applied sciences. Ohio Northern University is a private, United Methodist Church-affiliated university located in the United States in Ada, Ohio, founded by Henry Solomon Lehr in 1871.  ONU is accredited by The Higher Learning Commission and the North Central Association of Colleges and Schools.  ONU is a sister university with Dankook University, a private university in Seoul, South Korea.  In 2008, 2009, 2010, and 2013 "U.S. News & World Report" listed Ohio Northern as Regional Universities (Midwest), #2.
Answer: Worcester Polytechnic Institute