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_28 (viewers__millions_ INTEGER, episode__number VARCHAR, share VARCHAR)

### Question ###
What is the average number of million viewers that watched an episode before episode 11 with a share of 4?

### Accurate SQL ###

SELECT AVG(viewers__millions_) FROM table_name_28 WHERE episode__number < 11 AND share = "4"