With no explanation, label each line with "O", "organization-education", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
The
school
was
originally
all-boys
,
becoming
coeducational
in
1972
,
when
Serra
Catholic
High
School
merged
with
Mon
Yough
Catholic
High
School
.
The:O
school:O
was:O
originally:O
all-boys:O
,:O
becoming:O
coeducational:O
in:O
1972:O
,:O
when:O
Serra:organization-education
Catholic:organization-education
High:organization-education
School:organization-education
merged:O
with:O
Mon:organization-education
Yough:organization-education
Catholic:organization-education
High:organization-education
School:organization-education
.:O