Given the input sentence, please extract the subject and object containing a certain relation in the sentence according to the following relation types, in the format of "relation1: word1, word2; relation2: word3, word4". Relations include: product/material produced; manufacturer; distributed by; industry; position held; original broadcaster; owned by; founded by; distribution format; headquarters location; stock exchange; currency; parent organization; chief executive officer; director/manager; owner of; operator; member of; employer; chairperson; platform; subsidiary; legal form; publisher; developer; brand; business division; location of formation; creator.

Because the modularity or the power train is the trick here, meaning that a lot of the electro mobility propulsion components when it comes to e-axels, gearboxes, control systems, management systems around these – and then obviously the whole modularity around the vehicle as such, because when we talk about electric mobility and fuel cells, you should still have the high performing truck you know, which is sometimes forgotten.

Answer: product_or_material_produced: mobility, train