It all started when Facebook chief executive Mark Zuckerberg changed his profile picture with a tint of green, saffron and white for the Tricolour in a symbolic gesture to suggest he supports Prime Minister Narendra Modi's "Digital India" campaign.
Refer to the input text as context and select the correct relationship between 'Facebook' and 'Mark Zuckerberg' from the available options.
Options: business division, industry, founded by, employer