Table:
Cataract

Magnified view of a cataract seen on examination with a slit lamp
Specialty	Ophthalmology
Symptoms	Faded colors, blurry vision, halos around light, trouble with bright lights, trouble seeing at night[1]
Complications	Falling, depression, blindness[2][3]
Usual onset	Gradual[1]
Causes	Aging, trauma, radiation exposure, following eye surgery[1][4]
Risk factors	Diabetes, smoking tobacco, prolonged exposure to sunlight, alcohol[1]
Diagnostic method	Eye examination[1]
Prevention	Sunglasses, not smoking[1]
Treatment	Glasses, cataract surgery[1]
Frequency	60 million (2015)[5]

Retrieve the values of cells in the given rows or columns, indicated by row or column indices. Show the cells in each row or column in the JSON format {"row_id/column_id":"<row or column index>", "cell_list":"<a list of cells in this row/column>"}. For example, {"row_id":"3", "cell_list": ["A", "B", "C"]}.
rows or columns to retrieve:
the 1st column
the 2nd row
the 7th row

The extracted row or column contents are listed below.
For the 1st column: {"column_id": "1", "cell_list": ['Cataract', 'Specialty', 'Symptoms', 'Complications', 'Usual onset', 'Causes', 'Risk factors', 'Diagnostic method', 'Prevention', 'Treatment', 'Frequency']}
For the 2nd row: {"row_id": "2", "cell_list": ['Specialty', 'Ophthalmology']}
For the 7th row: {"row_id": "7", "cell_list": ['Risk factors', 'Diabetes, smoking tobacco, prolonged exposure to sunlight, alcohol']}