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, 5)
Distance from target shape to pink right_triangle at (5, 1): 7
Distance from target shape to blue square at (5, 3): 5
Distance from target shape to gray trapezoid at (1, 4): 2
Distance from target shape to orange trapezoid at (5, 0): 8
Distance from target shape to yellow right_triangle at (4, 5): 2
Closest shape is the gray trapezoid at (1, 4) with distance 2</think>

<answer>(1, 4)</answer>