Does "The Netherlands and Belgium produce the vast majority of music, films, books and other media written or spoken in Dutch." contain the correct answer to "How many different major dialects of Dutch are there?"

A: no

Does "Since 1988, the student organization Tarnseilerne has produced annual masquerade balls in Oslo, with masks, costumes and processions after attending an opera performance." contain the correct answer to "Where did the artist federation hold their annual balls?"

A: no

Does "As part of the housing and credit booms, the number of financial agreements called mortgage-backed securities (MBS) and collateralized debt obligations (CDO), which derived their value from mortgage payments and housing prices, greatly increased." contain the correct answer to "MBS and CDO derive their value from?"

A:
yes