There are 6 shapes on a 10x10 grid. Which shape is closest to the pink 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: pink right_triangle at (3, 1)
Distance from target shape to yellow right_triangle at (3, 2): 1
Distance from target shape to green trapezoid at (7, 8): 11
Distance from target shape to brown right_triangle at (1, 9): 10
Distance from target shape to red trapezoid at (2, 3): 3
Distance from target shape to gray right_triangle at (7, 0): 5
Closest shape is the yellow right_triangle at (3, 2) with distance 1</think>

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