Question: Microsoft Corp. and Intel Corp., on Monday, threw their weight behind the next-generation, HD DVD format being promoted by Toshiba Corp., in a blow to Sony Corp.'s Blu-ray format.

Microsoft Corp. is a competitor of Toshiba Corp.
Answer: no
Question: The development of agriculture by early humans, roughly 10,000 years ago, was also harmful to many natural ecosystems as they were systematically destroyed and replaced with artificial versions.

Humans existed 10,000 years ago.
Answer: yes
Question: Reagan announced he had Alzheimer's disease, an incurable brain affliction.

Reagan died of pneumonia complicated by Alzheimer's disease
Answer:
no