There are 6 shapes on a 5x5 grid. Which shape is closest to the gray 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: gray right_triangle at (1, 0)
Distance from target shape to brown rectangle at (0, 2): 3
Distance from target shape to yellow right_triangle at (2, 1): 2
Distance from target shape to purple rectangle at (3, 2): 4
Distance from target shape to orange right_triangle at (0, 1): 2
Distance from target shape to cyan trapezoid at (1, 3): 3
Closest shape is the yellow right_triangle at (2, 1) with distance 2</think>

<answer>(2, 1)</answer>