There are 5 shapes on a 7x7 grid. Which shape is closest to the purple right_triangle 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 right_triangle at (6, 0)
Distance from target shape to yellow square at (1, 4): 9
Distance from target shape to orange trapezoid at (3, 2): 5
Distance from target shape to brown trapezoid at (0, 3): 9
Distance from target shape to blue square at (0, 5): 11
Closest shape is the orange trapezoid at (3, 2) with distance 5</think>

<answer>(3, 2)</answer>