Assertion: population pyramid | /r/HasProperty | viewed as the most effective way
Facets:
value: often
type: TEMPORAL
value: because of the very clear image
type: CAUSE
Source sentences:
text: Population pyramids are often viewed as the most effective way to graphically depict the age and distribution of a population, partly because of the very clear image these pyramids represent.
text: Population pyramids are often viewed as the most effective way to graphically depict the age and sex distribution of a population, partly because of the very clear image these pyramids present.