Complex sentence: In this role, Vinson adopted a committee rule that came to be known as the "Vinson rule", which limited the number of questions a junior member of the committee could ask to one question per year of service on the committee.
Split into simpler sentences: In this role, Vinson adopted a committee rule that came to be known as the "Vinson rule". Accordingly, each year junior members of the committee could ask only one question per year of service on the committee.