There are 5 shapes on a 8x8 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 (3, 4)
Distance from target shape to blue square at (7, 5): 5
Distance from target shape to gray square at (7, 0): 8
Distance from target shape to orange trapezoid at (2, 6): 3
Distance from target shape to pink rectangle at (6, 7): 6
Closest shape is the orange trapezoid at (2, 6) with distance 3</think>

<answer>(2, 6)</answer>