Assertion: series's period | /r/HasAspect | 8 elements
Facets:
Source sentences:
text: Second period and third period each has 8 elements.
text: Second period and third period each has 8 elements.
text: Period 1 has only two elements (hydrogen and helium), while periods 2 and 3 have 8 elements.
text: Second period and third period each has 8 elements.
text: Second period and third period each has 8 elements.