Definition: In this task, you will use your knowledge about language (and common sense) to determine what element the marked number refers to. The numbers are marked with two underlines around them, like: _ number _. Your answer should be chosen from the given text, and should not contain other words.
Input: Lt. Shanley:  I served under the Captain at Shiloh , Fredericksburg , and in the Comanche wars .
Charles Briswell: But fortunately , not at Bitter Creek .
Jason McCord: As I recall , you lost two good friends at Bitter Creek .
Lt. Shanley: As I recall , you lost _ thirty _ .

friends