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.

Gene Siskel: Armstrong told me that of all the space movies he liked " _ 2001 _ " the best , that it did a remarkable job of communicating what living and traveling through outer space is actually like . What a remarkable and impressive compliment for a great movie .
Roger Ebert: That must be the best review that Stanley Kubrick has ever gotten for " 2001 " .
movies