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_76 ( goals VARCHAR, crewe_alexandra_career VARCHAR, position VARCHAR, nationality VARCHAR )

### Question ###
What is the number of goals when the position is DF, the nationality is England, and the Crewe Alexandra career is 1948 1951?

### Accurate SQL ###

SELECT COUNT(goals) FROM table_name_76 WHERE position = "df" AND nationality = "england" AND crewe_alexandra_career = "1948–1951"