Daniel Acker Share on twitter Share on Google Plus by John Kehoe Warren Buffett's biggest ever bet, a $US32.5 billion cash bid for aviation parts manufacturer Precision Castparts, demonstrates how his huge investment conglomerate Berkshire Hathaway is becoming increasingly reliant on big acquisitions to try to materially boost profits.
Refer to the input text as context and select the correct relationship between 'Berkshire Hathaway' and 'conglomerate' from the available options.
Options: chief executive officer, industry, developer, stock exchange