There are 4 shapes on a 6x6 grid. Which shape is closest to the brown 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: brown trapezoid at (4, 5)
Distance from target shape to yellow square at (5, 5): 1
Distance from target shape to red trapezoid at (3, 4): 2
Distance from target shape to green square at (0, 2): 7
Closest shape is the yellow square at (5, 5) with distance 1</think>

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