There are 6 shapes on a 9x9 grid. Which shape is closest to the cyan 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: cyan right_triangle at (1, 5)
Distance from target shape to yellow trapezoid at (2, 5): 1
Distance from target shape to red right_triangle at (4, 1): 7
Distance from target shape to green right_triangle at (6, 6): 6
Distance from target shape to orange square at (2, 2): 4
Distance from target shape to blue square at (5, 6): 5
Closest shape is the yellow trapezoid at (2, 5) with distance 1</think>

<answer>(2, 5)</answer>