There are 5 shapes on a 5x5 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, 2)
Distance from target shape to brown square at (3, 4): 3
Distance from target shape to blue square at (2, 3): 1
Distance from target shape to green rectangle at (1, 4): 3
Distance from target shape to gray trapezoid at (4, 3): 3
Closest shape is the blue square at (2, 3) with distance 1</think>

<answer>(2, 3)</answer>