From Longman Dictionary of Contemporary Englishbe a matter of doing somethingbe a matter of doing somethingDEPEND ON/RELY ONused to say that an action involves doing somethingbe simply/largely/merely etc a matter of doing something Reducing the number of road deaths is not simply a matter of improving roads. → matter
Examples from the Corpus
be simply/largely/merely etc a matter of doing something• Being right was largely a matter of explanations.• But if the move from history to hystery were simply a matter of role reversal it would be relatively unproblematic.• If the software documentation is readable and understandable, this should be largely a matter of following instructions.• It was simply a matter of trying every door.• Pareto was more convinced that authority is simply a matter of fraud rather than self-justification by the elite.• So learning is simply a matter of remembering what is important.• Then it was simply a matter of following footpaths to wells and villages.• What actions express an attitude is largely a matter of social convention. 