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_name_68 (time VARCHAR, swimmer VARCHAR, overall_rank VARCHAR)

### Question ###
Tell me the total number of time for luke hall overall rank being larger than 105

### Accurate SQL ###

SELECT COUNT(time) FROM table_name_68 WHERE swimmer = "luke hall" AND overall_rank > 105