Assertion: atomizer | /r/HasProperty | connected to self-propelled units
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Source sentences:
text: Sprayers range in size from man-portable units (typically backpacks with spray guns) to trailed sprayers that are connected to a tractor, to self-propelled units similar to tractors, with boom mounts of 4–30 feet up to 60–151 feet in length depending on engineering design for tractor and land size.