In addition, they use both nonstandard and customary measurement tools to measure the same items and compare the two answers.
(they; use; both nonstandard and customary measurement tools; to measure the same items and compare the two answers) Context(they use,List([13, 21))):(they; use both nonstandard and customary measurement tools to measure; the same items) Context(they use,List([13, 21))):(they; use both nonstandard and customary measurement tools to compare; the two answers)
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they they they
use use both nonstandard and customary measurement tools to measure use both nonstandard and customary measurement tools to compare
both nonstandard and customary measurement tools to measure the same items and compare the two answers
the same items
the two answers