Assertion: keyboard's design | /r/CapableOf | map phonetic and visual cues
Facets:
value: nearby one another
type: LOCATION
value: to map unused positions
type: PURPOSE
Source sentences:
text: Curtin's design sought to map phonetically related Russian sounds to QWERTY keys, to map proximate phonetic and visual cues nearby one another, as well as to map unused positions in a mnemonically ideal way.