Q: Does "Slaves were listed by owner, and classified by gender and age, not individually, and the question about color was a column that was to be marked with a "B" if the slave was black and an "M" if mulatto." provide a valid answer to "How were slaves listed in the 1850 US census?"?
A: yes

Q: Does "Should these 'enemies' come to Africa, "they will get malaria and sleeping sickness"." provide a valid answer to "What illnesses did Gaddafi claim would afflict invading colonialists?"?
A: yes

Q: Does "Today, numbers of larger whales have disappeared, but even today many species such humpback whale, minke whale, sei whale, and dolphins can be observed close to shores, and scientific surveys have been conducted regularly." provide a valid answer to "What other species can be seen close to the shores of Norfolk Island?"?
A: yes

Q: Does "The electromagnetic field obeys laws of motion similarly to a mass on a spring, and can come to thermal equilibrium with hot atoms." provide a valid answer to "How many years prior to Planck's study had the scientific community first discussed black body radiation?"?
A:
no