id	keyword
american_scientific_journal-7614	dry
american_scientific_journal-7614	wet
american_scientific_journal-7614	e(d
american_scientific_journal-7614	rainfall
american_scientific_journal-7614	days
american_scientific_journal-7614	pww
american_scientific_journal-7614	markov
american_scientific_journal-7614	pdd
american_scientific_journal-7614	chain
american_scientific_journal-7614	journal
american_scientific_journal-7614	research