TASK DEFINITION: In this task, you are given a question and a context passage. You have to answer the question based on the given passage.
PROBLEM: A deformation is also a?, Context: where  is the relevant cross-sectional area for the volume for which the stress-tensor is being calculated. This formalism includes pressure terms associated with forces that act normal to the cross-sectional area (the matrix diagonals of the tensor) as well as shear terms associated with forces that act parallel to the cross-sectional area (the off-diagonal elements). The stress tensor accounts for forces that cause all strains (deformations) including also tensile stresses and compressions.:133–134:38-1–38-11

SOLUTION: strains

PROBLEM: Small pneumatic __ can hold only one person., Context: A residential elevator is often permitted to be of lower cost and complexity than full commercial elevators. They may have unique design characteristics suited for home furnishings, such as hinged wooden shaft-access doors rather than the typical metal sliding doors of commercial elevators. Construction may be less robust than in commercial designs with shorter maintenance periods, but safety systems such as locks on shaft access doors, fall arrestors, and emergency phones must still be present in the event of malfunction.

SOLUTION: elevators

PROBLEM: What group was involved in West's comment?, Context: Myers spoke next and continued to read the script. Once it was West's turn to speak again, he said, "George Bush doesn't care about black people." At this point, telethon producer Rick Kaplan cut off the microphone and then cut away to Chris Tucker, who was unaware of the cut for a few seconds. Still, West's comment reached much of the United States.

SOLUTION:
black people