There are 4 shapes on a 6x6 grid. Which shape is closest to the orange 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: orange rectangle at (5, 2)
Distance from target shape to green right_triangle at (1, 4): 6
Distance from target shape to yellow square at (0, 1): 6
Distance from target shape to pink rectangle at (1, 1): 5
Closest shape is the pink rectangle at (1, 1) with distance 5</think>

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