PERSON@1 -LRB- NUMBER@1 -- NUMBER@2 -RRB- -- from PERSON@2 's MISC@1 also invented the LOCATION@1 for testing differential hearing ability .

PERSON@1 -LRB- NUMBER@3 -RRB- - from PERSON@2 's MISC@1 also invented the LOCATION@1 for testing differential hearing ability .
