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.

For several years now, traditional cable and satellite operators have added over-the-top services to their hybrid platforms, while over the top streaming services traditionally defined by their large video-on-demand libraries have added linear TV to their offerings More importantly, from UEI's perspective; all these video entertainment providers, whether they be traditional content aggregators such as Comcast and Dish, consumer electronics brands such as Sony, Samsung and LG or technology companies such as Google are expanding their offerings across more than one of the key video consumption platforms, television streamers and set-top boxes.

Answer: product_or_material_produced: Samsung, electronics; product_or_material_produced: Samsung, entertainment