There are 5 shapes on a 7x7 grid. Which shape is closest to the orange 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: orange trapezoid at (6, 5)
Distance from target shape to yellow square at (0, 5): 6
Distance from target shape to purple trapezoid at (5, 3): 3
Distance from target shape to gray rectangle at (5, 1): 5
Distance from target shape to red trapezoid at (0, 6): 7
Closest shape is the purple trapezoid at (5, 3) with distance 3</think>

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