I want to know the answer to the following question:
Who became the new patriarch of the UAOC in 1990?
All the background I'm provided with is that "On June 5–6, 1990, Metropolitan Mstyslav of the U.S.-based Ukrainian Orthodox Church was elected patriarch of the Ukrainian Autocephalous Orthodox Church (UAOC) during that Church's first synod.". Is that enough to answer the question?
Answer: yes