Complex sentence: The Optional Protocols to the Convention on the Rights of the Child on the Sale of Children, Child Prostitution and Child Pornography, supplementing the Convention on the Rights of the Child, was adopted by the United Nations General Assembly in 2000.
Split into simpler sentences: The Optional Protocols to the Convention on the Rights of the Child on the Sale of Children, Child Prostitution and Child Pornography is a protocol to the Convention on the Rights of the Child. It was adopted by the United Nations General Assembly in 2000.