Table:
Builder

Works numbers

Dates

CN numbers

GT numbers

Notes[1]

MLW

39548-39562
40583-40622

1906

2525-2566
2663

651-705

MLW

42331-42345
43150-43164

1907

2577-2605
2661-2662
2685

721-750

ALCO

42046-42060
43540-43554

1907

2567-2576
2606-2615
2664-2665
2669-2676

706-720
752
755
758
761
763

MLW

45163-45182

1908

2627-2646

631-650

MLW

46880-46894

1910

2647-2660
2686

616-630

ALCO

49663-49674

1911

2616-2625
2677-2678

766-777

built at ALCO's Brooks Works

ALCO

50472-50481

1911

2626
2666-2668
2679-2684

779-780
784
786-787

Retrieve the values of cells at the given table positions, indicated by row and column indices. The value of every target cell should be presented in the JSON format of {"row_id":"m", "column_id":"n", "cell_value":"<Corresponding Cell Value>"}, e.g., {"row_id":"10", "column_id":"3", "cell_value":"District"}.
Positions to check:
row 7 and column 4,
row 7 and column 1,
row 6 and column 4,
row 1 and column 5,
row 1 and column 3,
row 6 and column 5,
row 7 and column 6,
row 5 and column 2,
row 2 and column 3,

The extracted cell contents are listed below.
{"row_id":"7", "column_id":"4", "cell_value":"2616-2625\n2677-2678"}
{"row_id":"7", "column_id":"1", "cell_value":"ALCO"}
{"row_id":"6", "column_id":"4", "cell_value":"2647-2660\n2686"}
{"row_id":"1", "column_id":"5", "cell_value":"GT numbers"}
{"row_id":"1", "column_id":"3", "cell_value":"Dates"}
{"row_id":"6", "column_id":"5", "cell_value":"616-630"}
{"row_id":"7", "column_id":"6", "cell_value":"built at ALCO's Brooks Works"}
{"row_id":"5", "column_id":"2", "cell_value":"45163-45182"}
{"row_id":"2", "column_id":"3", "cell_value":"1906"}