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.

However last week’s announcement saw claims that chief executive Carlos Ghosn had been "scaremongering" when he warned that the prospect of Britain leaving the EU or renegotiating its membership terms would cause Nissan to “reconsider” its investments in the UK.

Answer: employer: Carlos Ghosn, Nissan