Complex sentence: This was so successful that it continues to be sung at the opening of NFWI AGMs, and many WIs open meetings by singing "Jerusalem", although it has never been adopted as the WI's official anthem.
Split into simpler sentences: This was so successful that it continues to be sung at the opening of NFWI AGMs, and many WIs open meetings by singing "Jerusalem". Although it has never been adopted as the WI's official anthem.