'bucket.?',
            'calendar.datetime',
            'calendar.date',
            'calendar.day',
            'calendar.month',
            'calendar.year',
            'calendar.time',
            'calendar.hour',
            'calendar.minute',
            'calendar.second',
            'calendar.unixTime',
            'calendar.unixTimeMilliseconds',
            'calendar.dayOfWeek',
            'calendar.plus/minus 12345 milisseconds/seconds/minutes/hours/days/weeks/months/years.dayOfWeek',

            'calendar.tomorow.datetime',
            'calendar.tomorow.date',
            'calendar.tomorow.day',
            'calendar.tomorow.month',
            'calendar.tomorow.year',
            'calendar.tomorow.time',
            'calendar.tomorow.hour',
            'calendar.tomorow.minute',
            'calendar.tomorow.second',
            'calendar.tomorow.unixTime',
            'calendar.tomorow.unixTimeMilliseconds',
            'calendar.tomorow.dayOfWeek',
            'calendar.yesterday.datetime',
            'calendar.yesterday.date',
            'calendar.yesterday.day',
            'calendar.yesterday.month',
            'calendar.yesterday.year',
            'calendar.yesterday.time',
            'calendar.yesterday.hour',
            'calendar.yesterday.minute',
            'calendar.yesterday.second',
            'calendar.yesterday.unixTime',
            'calendar.yesterday.unixTimeMilliseconds',
            'calendar.yesterday.dayOfWeek',
            'context.?',
            'contact.identity',
            'contact.name',
            'contact.email',
            'contact.group',
            'contact.address',
            'contact.city',
            'contact.phoneNumber',
            'contact.photoUri',
            'contact.cellPhoneNumber',
            'contact.gender',
            'contact.timezone',
            'contact.culture',
            'contact.source',
            'contact.extras.?',
            'config.?',
            'input.content',
            'input.entity.?.id',
            'input.entity.?.name',
            'input.entity.?.value',
            'input.intent.id',
            'input.intent.name',
            'input.intent.score',
            'input.intent.answer',
            'input.length',
            'input.type',
            'random.guid',
            'random.string',
            'random.integer',