Table:
district	incumbent	party	first elected	result	candidates

arkansas 1	ezekiel c gathings	democratic	1938	re - elected	ezekiel c gathings (d) unopposed

arkansas 2	wilbur mills	democratic	1938	re - elected	wilbur mills (d) unopposed

arkansas 3	james william trimble	democratic	1944	re - elected	james william trimble (d) unopposed

arkansas 4	william fadjo cravens	democratic	1939	retired democratic hold	boyd anderson tackett (d) unopposed

arkansas 5	brooks hays	democratic	1942	re - elected	brooks hays (d) unopposed

arkansas 6	william f norrell	democratic	1938	re - elected	william f norrell (d) unopposed

Please extract and show the values of the cells in row 7 of this table. Provide the cells in a row in the JSON structure, using the format {"row_id":"<row index>", "cell_list":"<a list of cells in this row>"}.

The cells in row 7: {"row_id": "7", "cell_list": ['arkansas 6', 'william f norrell', 'democratic', '1938', 're - elected', 'william f norrell (d) unopposed']}