Utilize the input text as a context reference, choose the right relationship between Narendra Modi and Bharatiya Janata Party from the options. Options: 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.

Opposition parties have attacked the Narendra Modi government over its alleged failure in bringing back black money as the Bharatiya Janata Party ( BJP ) had ‘promised’ during the Lok Sabha campaign.

Answer: member_of