You will be given a definition of a task first, then some input of the task.
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.

Lucius: What are we doing here , Bob ?
Bob: We 're protecting people .
Lucius: Nobody asked us .
Bob: You need an invitation ?
Lucius: I 'd like _ one _ , yes . We keep sneaking around , and ... You remember Gazer Beam ?
Bob: Yeah , there was something about him in the paper .
Lucius: He had trouble adjusting to civilian life too .
Bob: When was the last time you saw him ?
Lucius: I do n't see anyone from the old days , Bob , just you , and we 're pushing our luck as it is .
Output:
invitation