<｜begin▁of▁sentence｜>### Instruction:
Using the function `str_to_orientation`, how would you interpret the string 'horizontal' to one of the defined orientation values in graph plotting functions such as 'left-right', 'bottom-top', 'right-left', or 'top-bottom'?
### Response:
from igraph import str_to_orientation

# Convert a string to an orientation
orientation = str_to_orientation('horizontal')
print('The interpreted orientation is:', orientation)
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