There are 6 shapes on a 7x7 grid. Which shape is closest to the cyan 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: cyan square at (6, 5)
Distance from target shape to red trapezoid at (1, 1): 9
Distance from target shape to pink right_triangle at (2, 3): 6
Distance from target shape to brown square at (0, 5): 6
Distance from target shape to orange right_triangle at (2, 1): 8
Distance from target shape to blue right_triangle at (5, 0): 6
Closest shape is the pink right_triangle at (2, 3) with distance 6</think>

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