xmlファイルに既存の形式の行を加えたい

xmlファイル
1<?xml version='1.0' encoding='UTF-8'?>
2<root>
3  <document>
4    <sentences>
5      <sentence>
6        <tokens>
7          <token start="0" span="1" pos="DT" chunk="I-NP" entity="O" cat="NP[nb]/N" id="t0_0" surf="The" base="the"/>
8          <token start="1" span="1" pos="NN" chunk="I-NP" entity="O" cat="N" id="t0_1" surf="top" base="top"/>
9          <token start="2" span="1" pos="IN" chunk="I-PP" entity="O" cat="(NP¥NP)/NP" id="t0_2" surf="of" base="of"/>
10          <token start="3" span="1" pos="DT" chunk="I-NP" entity="O" cat="NP[nb]/N" id="t0_3" surf="the" base="the"/>
11          <token start="4" span="1" pos="NN" chunk="I-NP" entity="O" cat="N" id="t0_4" surf="mountain" base="mountain"/>
12          <token start="5" span="1" pos="VBZ" chunk="I-VP" entity="O" cat="(S[dcl]¥NP)/(S[pss]¥NP)" id="t0_5" surf="is" base="be"/>
13          <token start="6" span="1" pos="VBN" chunk="I-VP" entity="O" cat="(S[pss]¥NP)/PP" id="t0_6" surf="covered" base="cover"/>
14          <token start="7" span="1" pos="IN" chunk="I-PP" entity="O" cat="PP/NP" id="t0_7" surf="with" base="with"/>
15          <token start="8" span="1" pos="NN" chunk="I-NP" entity="O" cat="N" id="t0_8" surf="snow" base="snow"/>
16          <token start="9" span="1" pos="." chunk="O" entity="O" cat="." id="t0_9" surf="." base="."/>
17        </tokens>
18        <ccg root="s0_sp0" id="s0_ccg0">
19          <span root="true" id="s0_sp0" child="s0_sp1 s0_sp19" pos="None" category="S[dcl=true]" rule="rp"/>
20          <span id="s0_sp1" child="s0_sp2 s0_sp11" pos="None" category="S[dcl=true]" rule="ba"/>
21          <span id="s0_sp2" child="s0_sp3 s0_sp6" pos="None" category="NP" rule="ba"/>
22          <span id="s0_sp3" child="s0_sp4 s0_sp5" pos="None" category="NP[nb=true]" rule="fa"/>
23          <span start="0" span="1" pos="DT" chunk="I-NP" entity="O" id="s0_sp4" surf="The" base="the" terminal="t0_0" category="NP[nb=true]/N"/>
24          <span start="1" span="1" pos="NN" chunk="I-NP" entity="O" id="s0_sp5" surf="top" base="top" terminal="t0_1" category="N"/>
25          <span id="s0_sp6" child="s0_sp7 s0_sp8" pos="None" category="NP¥NP" rule="fa"/>
26          <span start="2" span="1" pos="IN" chunk="I-PP" entity="O" id="s0_sp7" surf="of" base="of" terminal="t0_2" category="(NP¥NP)/NP"/>
27          <span id="s0_sp8" child="s0_sp9 s0_sp10" pos="None" category="NP[nb=true]" rule="fa"/>
28          <span start="3" span="1" pos="DT" chunk="I-NP" entity="O" id="s0_sp9" surf="the" base="the" terminal="t0_3" category="NP[nb=true]/N"/>
29          <span start="4" span="1" pos="NN" chunk="I-NP" entity="O" id="s0_sp10" surf="mountain" base="mountain" terminal="t0_4" category="N"/>
30          <span id="s0_sp11" child="s0_sp12 s0_sp13" pos="None" category="S[dcl=true]¥NP" rule="fa"/>
31          <span start="5" span="1" pos="VBZ" chunk="I-VP" entity="O" id="s0_sp12" surf="is" base="be" terminal="t0_5" category="(S[dcl=true]¥NP)/(S[pss=true]¥NP)"/>
32          <span id="s0_sp13" child="s0_sp14 s0_sp15" pos="None" category="S[pss=true]¥NP" rule="fa"/>
33          <span start="6" span="1" pos="VBN" chunk="I-VP" entity="O" id="s0_sp14" surf="covered" base="cover" terminal="t0_6" category="(S[pss=true]¥NP)/PP"/>
34          <span id="s0_sp15" child="s0_sp16 s0_sp17" pos="None" category="PP" rule="fa"/>
35          <span start="7" span="1" pos="IN" chunk="I-PP" entity="O" id="s0_sp16" surf="with" base="with" terminal="t0_7" category="PP/NP"/>
36          <span id="s0_sp17" child="s0_sp18" pos="None" category="NP" rule="lex"/>
37          <span start="8" span="1" pos="NN" chunk="I-NP" entity="O" id="s0_sp18" surf="snow" base="snow" terminal="t0_8" category="N"/>
38          <span start="9" span="1" pos="." chunk="O" entity="O" id="s0_sp19" surf="." base="." terminal="t0_9" category="."/>
39        </ccg>
40      </sentence>
41    </sentences>
42  </document>
43</root>
44