Instruct: What's the average annual interchange for a rank over 26 in liverpool with an annual entry/exit less than 14.209 and more than 10 platforms?
Output: SELECT AVG Annual interchanges (millions) 2011–12 FROM table WHERE Rank > 26 AND Location = liverpool AND Annual entry/exit (millions) 2011–12 < 14.209 AND Number of Platforms > 10