Prompt
Generate a realistic image of Captain Mark Phillips, a middle-aged British man with a strong facial structure, wearing a formal equestrian outfit, possibly with a riding hat and holding a horse's reins, set against a backdrop of a lush green countryside or a horse riding arena, reflecting his occupation as a retired British Army officer and accomplished horse rider, specifically depicting him in his role as a member of the Great Britain equestrian team during the 1972 or 1988 Summer Olympics.