Table: irish sea
Question: What is the percentage of cities and towns in the Irish Sea region that have a population size within 10% of Dublin's population? 
Step 1 (Operation, Indexing): cities and towns, population, Dublin
Step 2 (Reasoning, Aggregating): COUNT, city / town
Step 3 (Operation, Filter): 0.1 * population (dublin)
Step 4 (Reasoning, Arithmetic): (/) * 100%, count(city / town where population < 0.1 * population (dublin)), count(city / town)
Answer: 61.5 %