There are 4 shapes on a 6x6 grid. Which shape is closest to the pink trapezoid 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 trapezoid at (2, 0)
Distance from target shape to cyan right_triangle at (0, 1): 3
Distance from target shape to green right_triangle at (5, 3): 6
Distance from target shape to gray right_triangle at (1, 5): 6
Closest shape is the cyan right_triangle at (0, 1) with distance 3</think>

<answer>(0, 1)</answer>