What is the relationship between 'Sony' and 'consumer electronics' in the context of the input sentence.
Options: currency, product/material produced, parent organization, manufacturer

After all, Sony seemed to have absolutely everything that a company might need to build a 21st century successor to the Walkman: creative consumer electronics engineers, slick designers, a computing division, expertise with video games, and it owned a music label bursting with famous artists such as Michael Jackson and Vai.
product/material produced