Does the sentence "It was not until the end of the eighteenth century that migration as an explanation for the winter disappearance of birds from northern climes was accepted." provide a valid answer to the question "Who wrote A History of British Birds?" OPTIONS:
- yes
- no

A: no

Does the sentence "The secondary and high school education system in Swaziland is a five-year programme divided into three years junior secondary and two years senior secondary." provide a valid answer to the question "How many years does a student spend in secondary and high school in Swaziland?" OPTIONS:
- yes
- no

A: yes

Does the sentence "In February 1975, Margaret Thatcher was elected leader of the British Conservative Party." provide a valid answer to the question "What political party was Margaret Thatcher the head of in 1975?" OPTIONS:
- yes
- no

A: yes

Does the sentence "The University of Oklahoma has several institutions of higher learning in the city and metropolitan area, with OU Medicine and the University of Oklahoma Health Sciences Center campuses located east of downtown in the Oklahoma Health Center district, and the main campus located to the south in the suburb of Norman." provide a valid answer to the question "Which district is OU Medicine campus located in?" OPTIONS:
- yes
- no

A:
yes