Indeed, «the Irish Government has not provided a confidence - inspiring track record of legislatively dealing with complex and controversial problems raised either by reproduction or reproductive technologies. (peh-med.biomedcentral.com)
So a fruitful source of confusion existed in the nomenclature of the early church, and probably there is no solution of the controversial problem as to the precise meaning in Paul's mind when he called Jesus «Lord.» (religion-online.org)
«We thereby solved a controversial problem in the history of technology,» underscores Prof. Pernicka. (sciencedaily.com)