There are 6 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 (4, 1)
Distance from target shape to brown rectangle at (0, 5): 8
Distance from target shape to blue rectangle at (5, 5): 5
Distance from target shape to purple square at (3, 5): 5
Distance from target shape to orange right_triangle at (0, 3): 6
Distance from target shape to cyan trapezoid at (1, 5): 7
Closest shape is the blue rectangle at (5, 5) with distance 5</think>

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