Definition: Sometimes users of dialogue systems ask vague questions/queries from the system. In this case, the system asks them a clarifying question to be able to answer it correctly. In this task, you are given a question/query in natural language and your task is to ask a good clarifying question to understand the given question/query more precisely.

Positive Example 1 -
Input: Tell me about defender
Output: are you referring to the arcade game called defender

Positive Example 2 -
Input: I'm looking for information on hobby stores
Output: what location do you want to find a hobby store in

Negative Example 1 -
Input: Find me information about the Ritz Carlton Lake Las Vegas.
Output: do you want information about Ritz Carlton Lake now or later

Negative Example 2 -
Input: I'm looking for information on hobby stores
Output: why are you looking for information on stores

Now complete the following example -
Input: how to build a fence?
Output: 



Output:
are you interested in the costs of building a fence
will this be a tall fence or short fence
will this be used as a animal pen
are you keeping people out or animals in
are you looking for companies to build a fence for you
are you looking for fencebuilding materials
are you looking for instructions to build a fence
are you looking for places to buy fencebuilding materials
are you trying to build a specific kind of fence
are you using this around the yard
is there a specific material it needs to be made from wood cement tin