Assertion: meter | /r/MadeOf | aluminum
Facets:
value: normally
type: DEGREE
value: to keep their weight
type: PURPOSE
value: to be lightweight
type: PURPOSE
Source sentences:
text: The meters are normally made of aluminum to be lightweight, and are usually 7.5 cm (3 in) capacity.
text: The meters are normally made of aluminium to keep their weight low and usually have a 3" capacity.