There are 4 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 (2, 3)
Distance from target shape to yellow square at (3, 2): 2
Distance from target shape to blue square at (6, 4): 5
Distance from target shape to brown trapezoid at (6, 3): 4
Closest shape is the yellow square at (3, 2) with distance 2</think>

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