Does the sentence "Grazing livestock may pull some grass out at the roots, but most is simply grazed upon, allowing the plant to regrow once again." provide a valid answer to the question "Prey that can regrow leaves or arms have learned to deal with what?"

A: no

Does the sentence "Most of the migrants are from communities in Sudan and Eritrea, particularly the Niger-Congo-speaking Nuba groups of the southern Nuba Mountains; some are illegal immigrants." provide a valid answer to the question "What languages do they speak?"

A: yes

Does the sentence "There are scouting and guiding groups on Saint Helena and Ascension Island." provide a valid answer to the question "What kind of groups are on Saint Helena and Ascension Island?"

A: yes

Does the sentence "Consequently, the lineages of some Canadian army units stretch back to the early 19th century, when militia units were formed to assist in the defence of British North America against invasion by the United States." provide a valid answer to the question "The forces of what countries did people serve before the unification?"

A:
no