Detailed Instructions: 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.
Q: Lt. Hikaru Sulu: Mr. Spock , if it takes a stasis box to find another stasis box , how did anyone ever find the first _ one _ ?
Mr. Spock: As with a number of discoveries , purely by accident , lieutenant .
A:
box