Question:
Based on the premise "Accounts vary as to what happened next, but it appears that Shearer was either duped by the Serbs or double-crossed by them.", can we conclude that "The Serbs double-crossed Shearer."?
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Answer:
it is not possible to tell

Question:
Based on the premise "yeah yeah now i i do use gas cards", can we conclude that "I didn't really like gas cards before, but I guess I do use them quite a lot now without even thinking about it."?
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Answer:
it is not possible to tell

Question:
Based on the premise "We have a choice.", can we conclude that "We do not have a choice."?
****
Answer:
no