Does the sentence "The port maintained a neutral stance since the Caribbean war was on in the 18th century." provide a valid answer to the question "What war occurred in the 18th century?" OPTIONS:
- yes
- no

A: yes

Does the sentence "However, the lifecycles of most living polychaetes, which are almost all marine animals, are unknown, and only about 25% of the 300+ species whose lifecycles are known follow this pattern." provide a valid answer to the question "How many species of polychaetes have known lifecycles?" OPTIONS:
- yes
- no

A: yes

Does the sentence "However the United Nations intervened, naming Douglas MacArthur commander of its forces, and UN-US-ROK forces held a perimeter around Pusan, gaining time for reinforcement." provide a valid answer to the question "What general was fired for defying President Truman's containment strategy?" OPTIONS:
- yes
- no

A: yes

Does the sentence "They proposed instead that a comprehensive regime to protect the Antarctic environment be negotiated in its place." provide a valid answer to the question "When was the treaty to regulate mining agreed upon?" OPTIONS:
- yes
- no

A:
no