There are 3 shapes on a 6x6 grid. Which shape is closest to the yellow 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: yellow trapezoid at (5, 5)
Distance from target shape to cyan rectangle at (3, 0): 7
Distance from target shape to orange right_triangle at (5, 3): 2
Closest shape is the orange right_triangle at (5, 3) with distance 2</think>

<answer>(5, 3)</answer>