In this task, you are given a text and a question. The answer to the question is an entity from the text. The answer is a single word or a sequence of words. The answer might be a person name, an organization name, an airport, a city, a company, a country, a number, a date, an event or a work of art.

Question: what's the name of the company that invented any device for the phone?
Text: In this paper we present detailed research on the application of the 2G/3G mobile network to the tracking of mobile objects. The application of 2G/3G mobile networks for tracking of mobile objects is of special interest due to the large number of mobile network users and the wide area of coverage of the network.
Answer:
In this task, you are given a text and a question. The answer to the question is an entity from the text. The answer is a single word or a sequence of words. The answer might be a person name, an organization name, an airport, a city, a company, a country, a number, a date, an event or a work of art.

Question: what's the name of the company that invented any device for the phone?
Text: In this paper we present detailed research on the application of the 2G/3G mobile network to the tracking of mobile objects. The application of 2G/3G mobile networks for tracking of mobile objects is of special interest due to the large number of mobile network users and the wide area of coverage of the network.
Answer:
user
There is no specific mention of any company in the text that invented any device for the phone. The text discusses the application of 2G/3G mobile networks for tracking mobile objects. It does not mention any devices or companies related to the invention of such devices.
assistant
In this task, you are given a text and a question. The answer to the question is an entity from the text. The answer is a single word or a sequence of words. The answer might be a person name, an organization name, an airport, a city, a company, a country, a number, a date, an event or a work of art.

Question: what's the name of the company that invented any device for the phone?
Text: In this paper we present detailed research on the application of the 2G/3G mobile network to the tracking of mobile objects. The application of 2G/3G mobile networks for tracking of mobile objects is of special interest due to the large number of mobile network users and the wide area of coverage of the network.
Answer:
user
The answer to the question "what's the name of the company that invented any device for the phone?" is not mentioned in the given text about research on 2G/3G mobile networks and their application to tracking mobile objects.
assistant
The answer to the question "what's the name of the company that invented any device for the phone?" is not mentioned in the given text about research on 2G/3G mobile networks and their application to tracking mobile objects. There is no specific mention of any company in the text that invented any device for the phone. The text discusses the application of 2G/3G mobile networks for tracking mobile objects. It does not mention any devices or companies related to the invention of such devices.