There are 3 shapes on a 7x7 grid. Which shape is closest to the red rectangle in terms of Manhattan distance? The final answer is the grid position of the closest shape like (row_index, column_index).
<think>Target shape: red rectangle at (2, 5)
Distance from target shape to orange rectangle at (1, 1): 5
Distance from target shape to yellow right_triangle at (3, 1): 5
Closest shape is the orange rectangle at (1, 1) with distance 5</think>

<answer>(1, 1)</answer>