In this task, you're given a statement, further information available on a particular linked term from the statement, and a question. Your job is to generate the answer to the question by using the information provided. If there is no clear answer obtainable, output 'none'.
Q: Context: and set up his Edge productions company in 1974. His productions included work by The Abyssinians, The Heptones, and Marcia Griffiths. Link Information: he Abyssinians are a Jamaican roots reggae group, famous for their close harmonies and promotion of the Rastafari movement in their lyrics.

History.The vocal trio was originally formed in 1968 Question: Which band and artist Edge helped produce made their professional debut first?
A:
Answer: Griffiths