Does the sentence "In some fields Hellenistic culture thrived, particularly in its preservation of the past." provide a valid answer to the question "Who is most responsible for the preservation of Hellenistic culture?"

A: no

Does the sentence "Although the Greeks call the country Hellas or Ellada (Greek: or ) and its official name is the Hellenic Republic, in English it is referred to as Greece, which comes from the Latin term Graecia as used by the Romans, which literally means 'the land of the Greeks', and derives from the Greek name ." provide a valid answer to the question "From what word is Greece derived?"

A: yes

Does the sentence "The new government went about purging itself of the non-Islamist political opposition." provide a valid answer to the question "What happened to the nationalists and Marxists that had helped the Islamic ruling government to depose the Shah?"

A: no

Does the sentence "Phytochemicals (Section Below) and their subgroup, polyphenols, make up the majority of antioxidants; about 4,000 are known." provide a valid answer to the question "What subgroup of phytochemicals helps make up the majority of the body's antioxidants?"

A:
yes