Problem: Does "The brain reaches 90% of its adult size by the time a person is six years of age." answer the question "The brain reaches 90% of its adult size by the time a person reaches what year of age?"

A: yes

Problem: Does "To dye fabrics green, they first colored them yellow with dye made from saffron and then soaked them in blue dye from the roots of the woad plant." answer the question "How did Egyptians dye fabrics yellow?"

A: yes

Problem: Does "Who Knew Too Much." answer the question "Who began to host Essentials Jr. in 2011?"

A:
no