There are 4 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 (0, 1)
Distance from target shape to yellow trapezoid at (4, 0): 5
Distance from target shape to brown rectangle at (8, 1): 8
Distance from target shape to blue rectangle at (8, 7): 14
Closest shape is the yellow trapezoid at (4, 0) with distance 5</think>

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