There are 5 shapes on a 7x7 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 (3, 3)
Distance from target shape to green trapezoid at (3, 1): 2
Distance from target shape to cyan square at (3, 0): 3
Distance from target shape to purple square at (4, 5): 3
Distance from target shape to orange rectangle at (4, 2): 2
Closest shape is the green trapezoid at (3, 1) with distance 2</think>

<answer>(3, 1)</answer>