In the list of tokens, identify 'Person', 'Location', and 'Organisation' and label each accordingly. If the entity spans multiple tokens, use the prefix B-PER, B-LOC, or B-ORG for the first token, and I-PER, I-LOC, or I-ORG for the subsequent tokens of that entity. The beginning of each separate entity should always be labeled with a B-PER, B-LOC, or B-ORG prefix. If the token does not fit into any of the three named categories, or is not a named entity, label it as 'O'. Each line should contain one token and its corresponding label, separated by a colon. Do not combine tokens on your own. The format for each line should be: 'token:label'.

Text: Drury
began
his
career
at
Schroders
in
1996
,
and
joined
Citi
when
the
bank
merged
with
Schroders
in
2000
.
Answer: 
Drury:B-PER
began:O
his:O
career:O
at:O
Schroders:B-ORG
in:O
1996:O
,:O
and:O
joined:O
Citi:B-ORG
when:O
the:O
bank:O
merged:O
with:O
Schroders:B-ORG
in:O
2000:O
.:O