Question:
Commercial traffic declined during the 17th and 18th centuries, revived briefly with the advent of the steamship in 1832, then succumbed to silting and the onslaught of the railways.

Does it follow that "The steamship made no impact upon traffic. "?
Answer:
no

Question:
Nevertheless, if you're into printing out, it's worth investigating.

Does it follow that "It is worth investigating if you are printing it out and have the time."?
Answer:
it is not possible to tell

Question:
"The others were the same," he said.

Does it follow that "He was bored with the monotony."?
Answer:
it is not possible to tell

Question:
well how about the Wonder Years do you like the Wonder Years

Does it follow that "Have you heard of the Wonder Years?"?
Answer:
it is not possible to tell