Complex sentence: The Belcea Quartet is a string quartet, formed in 1994, under the leadership of violinist Corina Belcea, while its members were studying at the Royal College of Music in London.
Split into simpler sentences: The Belcea Quartet is a string quartet, formed in 1994, under the leadership of violinist Corina Belcea. The quartet was formed while its members were studying at the Royal College of Music in London.