Assertion: pollen | /r/AtLocation | the air
Facets:
Source sentences:
text: These reports (or more accurately, forecasts) give us some idea of how much pollen is present in the air.
text: A person trained in pollen identification examines the slide under a microscope, and the amounts of different types of pollen are counted.﻿﻿ Calculations are then made that estimate how much pollen is present in the air, based on the amount of pollen on the slide collected over a specified period of time.
text: Airallergy tells you how much pollen and fungal spores are present in the air.