In this task, you are given a question and a context passage. You have to answer the question based on the given passage.
Q: What city is the non registered office of the commercial arm of RIBA in?, Context: RIBA Enterprises is the commercial arm of RIBA, with a registered office in Newcastle upon Tyne, a base at 15 Bonhill Street in London, and an office in Newark. It employs over 250 staff, approximately 180 of whom are based in Newcastle.
A:
Newark