CREATE TABLE table_name_68 (height_metres___ft VARCHAR, years_as_tallest VARCHAR)

Name the Height metres / ft of Years with tallest of 1098 1310?
SELECT height_metres___ft FROM table_name_68 WHERE years_as_tallest = "1098–1310"
SELECT "height_metres___ft" FROM "table_name_68" WHERE "1098–1310" = "years_as_tallest"