Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_15229 ( "Rank" real, "Heat" real, "Lane" real, "Nation" text, "Time" text )

### Question ###
In what heat did the swimmer in Lane 6 rank higher than 7 with a time of 4:08.27?

### Accurate SQL ###

SELECT SUM("Heat") FROM table_15229 WHERE "Lane" = '6' AND "Time" = '4:08.27' AND "Rank" > '7'