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 (2, 1)
Distance from target shape to yellow rectangle at (4, 5): 6
Distance from target shape to orange right_triangle at (3, 5): 5
Distance from target shape to blue trapezoid at (5, 2): 4
Distance from target shape to cyan right_triangle at (3, 2): 2
Distance from target shape to brown square at (1, 2): 2
Closest shape is the cyan right_triangle at (3, 2) with distance 2</think>

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