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_31 ( area___ha__ VARCHAR, height__m_ VARCHAR, island VARCHAR )

### Question ###
What is the area (ha) of the group on the island of Linga Holm that has a Height (m) larger than 7?

### Accurate SQL ###

SELECT area___ha__ FROM table_name_31 WHERE height__m_ > 7 AND island = "linga holm"