Does the sentence "The Treaty also revealed that the Ottoman Empire was on the defensive and unlikely to present any further aggression in Europe." provide a valid answer to the question "The Treaty of Belgrade was the result of a war known as what?" OPTIONS:
- yes
- no

A: no

Does the sentence "Purified penicillin displayed potent antibacterial activity against a wide range of bacteria and had low toxicity in humans." provide a valid answer to the question "When was penicillin G first purified?" OPTIONS:
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A: no

Does the sentence "Except for three patents, the US patents administered by Sisvel had all expired in 2015, however (the exceptions are:" provide a valid answer to the question "When did the majority of the patents held by Sisvel expire?" OPTIONS:
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A: yes

Does the sentence "An investigation by ProPublica found that at least 21 doctors have been paid more than $500,000 for speeches and consulting by drugs manufacturers since 2009, with half of the top earners working in psychiatry, and about $2 billion in total paid to doctors for such services." provide a valid answer to the question "Half of the top earners were mostly in what field?" OPTIONS:
- yes
- no

A:
yes