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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def column_preview(table_name, col_name):
 """ Return the first ten elements of a column as JSON in Pandas' "split" format. """

    col = orca.get_table(table_name).get_column(col_name).head(10)

    return (
        col.to_json(orient='split', date_format='iso'),
        200,
        {'Content-Type': 'application/json'})