Analyze the relationship between 'Samsung' and 'SEOUL' within the context of the input sentence.
Options: developer, chairperson, position held, location of formation

SEOUL (Reuters) - The $8 billion (5.16 billion pounds) merger of two Samsung Group [SAGR.UL] affiliates cleared another major hurdle, with requests for buybacks from shareholders opposed to the deal falling well short of the amount that could have scuppered it.
location of formation