original question: what transit service type is the transit service types of [Metlink], and also the mode of transit for a transit line of [Amtrak]?
answer: train
answer type: Transit Service Type.
auxiliary information: Metlink was the marketing body and umbrella brand for public train, tram and bus transport operators in Greater Melbourne, Victoria, Australia. On 2 April 2012, the operations of Metlink were transferred to the newly-created public transport planning and management authority, Public Transport Victoria.Amtrak:;Type: Mass Transportation System. ;
What transit service type is [Metlink] and what mode of transit is the [Amtrak] line?