Analyze the relationship between 'Wanda Group' and 'Dalian' within the context of the input sentence.
Options: location of formation, member of, product/material produced, owner of

** The entertainment arm of Chinese property conglomerate Dalian Wanda Group said on Friday it would lead an almost 6 billion yuan ($967 million) investment into one of China's biggest travel websites, its first foray into online tourism.
location of formation