Ask the editors: submit your questions for Facebook execs Nicola Mendelsohn and Mark D'Arcy

Facebook’s top team, Nicola Mendelsohn vice president for Europe, the Middle East and Africa, and Mark D’Arcy, chief creative officer of its Creative Shop, will be answering questions posed by The Drum readers via our Facebook page.
Part of a project that will see the two guest edit July’s edition of The Drum along with Facebook’s chief operating officer, Sheryl Sandberg. 
Questions for the pair can be submitted and voted upon via Facebook to be put to the guest