Assertion: worker's labor | /r/ObjectUse | used for farmwork
Facets:
Source sentences:
text: For the period 1950-69, the greatest increase in crop production per acre was in the southeastern states; the greatest reduction in man-hours of labor used for farmwork was in the southeast and southern delta states, while the second greatest increase in farm output per man-hour was in the delta states (the greatest increase being in the southern plains).