There are 6 shapes on a 7x7 grid. Which shape is closest to the purple 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: purple trapezoid at (6, 1)
Distance from target shape to pink square at (2, 6): 9
Distance from target shape to brown rectangle at (1, 2): 6
Distance from target shape to orange square at (4, 0): 3
Distance from target shape to cyan trapezoid at (1, 1): 5
Distance from target shape to blue right_triangle at (3, 2): 4
Closest shape is the orange square at (4, 0) with distance 3</think>

<answer>(4, 0)</answer>