With no explanation, label each line with "building-other", "O", "product-other", "location-GPE", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other" or "art-painting" preceded by ":".
The
first
commercially
viable
CT
scanner
was
invented
by
Sir
Godfrey
Hounsfield
in
Hayes
,
United
Kingdom
,
at
EMI
Central
Research
Laboratories
using
X-rays
.
The:O
first:O
commercially:O
viable:O
CT:product-other
scanner:product-other
was:O
invented:O
by:O
Sir:O
Godfrey:person-other
Hounsfield:person-other
in:O
Hayes:location-GPE
,:O
United:location-GPE
Kingdom:location-GPE
,:O
at:O
EMI:building-other
Central:building-other
Research:building-other
Laboratories:building-other
using:O
X-rays:O
.:O