There are 6 shapes on a 7x7 grid. Which shape is closest to the pink square 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 square at (1, 4)
Distance from target shape to red square at (2, 3): 2
Distance from target shape to purple rectangle at (6, 5): 6
Distance from target shape to yellow trapezoid at (3, 5): 3
Distance from target shape to brown right_triangle at (1, 6): 2
Distance from target shape to cyan right_triangle at (0, 1): 4
Closest shape is the red square at (2, 3) with distance 2</think>

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