Table:
x	y

14	19

15	9

16	1

This image illustrates a table. Find the cells in column 1, return their values. The cells in a column should be presented in the JSON format of {"column_id":"<column index>", "cell_list":"<a list of cells in this column>"}, e.g., {"column_id":"3", "cell_list": ["xxx", "yyy", "zzz"]}.

The cells in column 1: {"column_id": "1", "cell_list": ['x', '14', '15', '16']}