There are 4 shapes on a 6x6 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 (3, 4)
Distance from target shape to orange right_triangle at (5, 0): 6
Distance from target shape to green square at (1, 0): 6
Distance from target shape to purple trapezoid at (4, 0): 5
Closest shape is the purple trapezoid at (4, 0) with distance 5</think>

<answer>(4, 0)</answer>