When a cellular telephone user places a call, the carreir transmits the caller's voice as well as the voice of the person who is called. The encoded voices are the data of the call. In addition to transmitting the data, the carrier also stores metadata. The metadata of the call include information such as the time the call is placed and the phone numbers of both participants. For which of the following goals would it be more useful to computationally analyze the metadata instead of the data?

1. To determine if a caller frequently uses a specific word
2. To estimate the number of phone calls that will be placed next Monday between 10:30 A.M. and noon
3. To generate a list of criminal suspects when given the telephone number of a known criminal

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The metadata would include information on number of calls, the time of the calls, and the telephone numbers. The data would have information on specific words.