Q: Does "Heartwood is often visually distinct from the living sapwood, and can be distinguished in a cross-section where the boundary will tend to follow the growth rings." provide a valid answer to "In what part of a tree's cross-section is heartwood visible?"?
A: yes

Q: Does "Until the 1950s guns firing ballistic munitions were the standard weapon; guided missiles then became dominant, except at the very shortest ranges." provide a valid answer to "What was the standard weapon until the 1950s?"?
A: yes

Q: Does "During Massamba-Debat's term in office the regime adopted "scientific socialism" as the country's constitutional ideology." provide a valid answer to "What was a term that could describe the political philosophy of the Congo under Massamba-Debat?"?
A: yes

Q: Does "Somali architecture is a rich and diverse tradition of engineering and designing." provide a valid answer to "Along with the early modern and ancient, during what period did Somali architecture exist?"?
A:
no