You will be given a definition of a task first, then some input of the task.
In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.

Some vaccines take _ weeks to become highly effective.
Output:
six
You will be given a definition of a task first, then some input of the task.
In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.

Some vaccines take _ weeks to become highly effective.
Output:
user
six
assistant
You will be given a definition of a task first, then some input of the task.
In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.

Some vaccines take _ weeks to become highly effective.
Output:
six