Utilize the input text as a context reference, choose the right relationship between 'Saipem' and 'Milan' from the options.
Options: headquarters location, publisher, brand, subsidiary

Among other standouts, Italian oil group Saipem (Amsterdam: QG6.AS - news ) retreated 6.4 percent after cutting its guidance, and that weighed on the Milan stock market which fell 0.3 percent.
headquarters location