Question: when was the company founded by philanthropist which  is Sellen Construction client established  
Sentence (from "Vulcan Inc."): It was established in 1986 and oversees Allen's diverse business activities and philanthropic endeavors--from sports teams which include the Seattle Seahawks and the Portland Trail Blazers to conservation projects such as the Great Elephant Census, the Seattle Cinerama, and Museum of Pop Culture.
Relevant evidence: Yes