Question:
Based on the premise "A crashing blow descended on his head, and all was darkness.", can we conclude that "He felt the object smash into his skull then lost consciousness."?
****
Answer:
it is not possible to tell

Question:
Based on the premise "The most frequently cited causes 1) Fed Chairman Alan Greenspan's cautionary comments to investors (he warned that stocks and bonds could plunge if investors were to lose confidence in the market)", can we conclude that "These are the causes that have been cited most frequently."?
****
Answer:
yes

Question:
Based on the premise "It was built in 1929 by William Wrigley, the chewing gum magnate.", can we conclude that "William Wrigley was proud of it."?
****
Answer:
it is not possible to tell