Question: Is the following statement true?
"There was once a free open source version of the Solaris."

Let me think..... Solaris (operating system) had a open source program that could be bought in bulk but was discontinued. The answer is yes.

Question: Is the following sentence factually correct?
"Joseph Hooker received 5 brevet promotions and died at Hadley, Massachusetts."
Options:
- yes
- no

Let me think..... Hooker had served in the Seminole Wars and the MexicanAmerican War, receiving three brevet promotions, before resigning from the Army and died at Garden City, New York. The answer is no.

Question: Is the following sentence factually correct?
"Poul Anderson never wrote stories in the genre of fantasy."
Options:
- yes
- no

Let me think..... Poul Anderson also wrote short stories and novels in the genre of fantasy, mystery and time travel. The answer is no.

Question: Does the following sentence make sense?
"Many start their naval career as a Midshipman."
Options:
- yes
- no
Let me think..... Midshipman is the lowest naval rank across many countries. The answer is yes.