How many rounds were there in Karlskoga Motorstadion with Roger Eriksson at the pole position?
CREATE TABLE table_20079931_4 (
    round VARCHAR,
    circuit_location VARCHAR,
    pole_position VARCHAR
)
SELECT COUNT(round) FROM table_20079931_4 WHERE circuit_location = "Karlskoga Motorstadion" AND pole_position = "Roger Eriksson"
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: How many rounds were there in Karlskoga Motorstadion with Roger Eriksson at the pole position? ### Input: CREATE TABLE table_20079931_4 (
    round VARCHAR,
    circuit_location VARCHAR,
    pole_position VARCHAR
) ### Response: SELECT COUNT(round) FROM table_20079931_4 WHERE circuit_location = "Karlskoga Motorstadion" AND pole_position = "Roger Eriksson"