id	keyword
american_scientific_journal-3609	parking
american_scientific_journal-3609	robot
american_scientific_journal-3609	car
american_scientific_journal-3609	position
american_scientific_journal-3609	path
american_scientific_journal-3609	parallel
american_scientific_journal-3609	research
american_scientific_journal-3609	length
american_scientific_journal-3609	space