There are 6 shapes on a 6x6 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 (2, 4)
Distance from target shape to purple rectangle at (4, 5): 3
Distance from target shape to yellow right_triangle at (4, 3): 3
Distance from target shape to orange trapezoid at (0, 0): 6
Distance from target shape to gray right_triangle at (3, 0): 5
Distance from target shape to blue rectangle at (5, 5): 4
Closest shape is the purple rectangle at (4, 5) with distance 3</think>

<answer>(4, 5)</answer>