]> The contact info of the research institute. The institute responsible for collecting the data set. The subjects participate in the collection. The relation of participants to the research. The social relationship between participants. The value for a context. The wellness status of participants. The address of the institute. The age of the participant. The background of the participant. The duration of the data set being collected. The main contact that is in charge of the data set, for any one wishing to use it. How much the participant is related to the data collection methodology. The domain that the type of sensors measures about and that the context value indicates. The contact email. The end time to when the reading is valid. In what environment the data set is collected. The fax number of the institute. How much the participant is related to the generic research. The homepage about the data set in the institute. The identity. The location where the sensor is installed and where the context is applied. The name of the data set, the type name of the sensor, or the name of the sensor. The object that the sensor is attached to and that the context refers to. The phone number to contact the institute. How much the participant is related to this particular research topic. The Id of the sensor. How much the participant is related to the sensor technology. The start time from when the reading is valid. Sensors' type Id. The unit of measurement to describe the values. The value is produced from a sensor. The version of the data set. The contact details. The domain context is used to describe the parameters of environments. The data set class includes all the meta information about its collection: who, when, where, and how it is collected. The domain value is composed of a literal value type and the unit of the measurement. The institute is responsible for collecting. The subjects participate in the collection The relation of the participants to the research. The sensors are used in collection. The quality of sensors. The readings of a sensor produces. The type of sensors. The social relationship between participants. The technical specifications of a type of sensors. The wellness of a participant.