I have two columns of data and I want to know where column one's data exists
in column two. It is not as easy as just using a countif function or
anything. Please see my data set. Column C is just used to see if it
exists. Please help.

A B C
Jason Hopson Jason Found in Column A is yes
Jack Alan Sam Found in Column A is yes
Mark Bran Noelia Found in Column A is yes
Noelia Sam Tina Not found
Sam Zink