question: Which region (year) has Abigail at number 7, Sophia at number 1 and Aaliyah at number 5?
answer: SELECT region__year_ FROM table_name_12 WHERE no_7 = "abigail" AND no_1 = "sophia" AND no_5 = "aaliyah"
context: CREATE TABLE table_name_12 (region__year_ VARCHAR, no_5 VARCHAR, no_7 VARCHAR, no_1 VARCHAR)