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.

"What I can tell you is, as it relates to at least the New York Stock Exchange and United Airlines, there is no indication at this point of any sort of malicious activity being responsible for the technical issues that they've endured today," White House press secretary Josh Earnest said.

Answer: position_held: Josh Earnest, White House press secretary