id	keyword
cet-15734	food
cet-15734	waste
cet-15734	food waste
cet-15734	pandemic
cet-15734	covid-19
cet-15734	doi
cet-15734	data
cet-15734	changes
cet-15734	countries
cet-15734	production
cet-15734	generation
cet-15734	values