There are 6 shapes on a 4x4 grid. Which shape is closest to the orange 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: orange right_triangle at (3, 0)
Distance from target shape to yellow rectangle at (0, 2): 5
Distance from target shape to cyan rectangle at (1, 0): 2
Distance from target shape to brown square at (1, 3): 5
Distance from target shape to green trapezoid at (1, 1): 3
Distance from target shape to gray right_triangle at (1, 2): 4
Closest shape is the cyan rectangle at (1, 0) with distance 2</think>

<answer>(1, 0)</answer>