There are 5 shapes on a 7x7 grid. Which shape is closest to the pink 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: pink rectangle at (0, 2)
Distance from target shape to red right_triangle at (4, 4): 6
Distance from target shape to cyan square at (6, 0): 8
Distance from target shape to brown rectangle at (4, 5): 7
Distance from target shape to yellow square at (2, 6): 6
Closest shape is the red right_triangle at (4, 4) with distance 6</think>

<answer>(4, 4)</answer>