There are 4 shapes on a 6x6 grid. Which shape is closest to the yellow 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: yellow right_triangle at (0, 2)
Distance from target shape to pink trapezoid at (2, 5): 5
Distance from target shape to brown trapezoid at (2, 0): 4
Distance from target shape to blue right_triangle at (1, 1): 2
Closest shape is the blue right_triangle at (1, 1) with distance 2</think>

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