19 AND 20 CONTAIN BOTH FACTUAL AS WELL AS @1 @5 @10 @ 50 OPINION A...

18, 19 and 20 contain both factual as well as

@1

@5

@10

@ 50

opinion aspects and the OQA system performed

better than the TQA, although in some cases,

TQA

OQA

TQA

OQA

TQA

OQA

TQA

OQA

1

F 9

1

0

0

1

1

1

1

3

answers were lost due to the artificial boosting of

2

F

13

0

1

2

3

0

6

11

7

the queries containing NEs of the EAT (Ex-

3

F 2

0

1

0

2

0

2

2

2

pected Answer Type). Therefore, it is obvious

4

F 1

0

0

0

0

0

0

1

0

5

F 3

0

0

0

0

0

0

1

0

that an extra method for answer ranking should

6

F 2

0

0

0

1

0

1

2

1

be used, as Answer Validation techniques using

7

F 4

0

0

0

0

1

0

4

0

Textual Entailment. In Table 3, the OQA missed

8

F 1

0

0

0

0

0

0

1

0

9

O 5

0

1

0

2

0

2

0

4

some of the answers due to erroneous sentence

10

O 2

0

0

0

0

0

0

0

0

splitting, either separating text into two sentences

11

O 5

0

0

0

1

0

2

0

3

where it was not the case or concatenating two

12

O 2

0

0

0

1

0

1

0

1

13

O 8

0

1

0

2

0

2

0

4

consecutive sentences; thus missing out on one

14

O

25

0

1

0

2

0

4

0

8

of two consecutively annotated answers. Exam-

15

O

36

0

1

0

2

0

6

0

15

ples are questions number 16 and 17, where

16

O

23

0

0

0

0

0

0

0

0

17

O

50

0

1

0

5

0

6

0

10

many blog entries enumerated the different ar-

18

O

10

0

1

0

1

0

2

0

2

guments in consecutive sentences. Another

19

O 4

0

1

0

1

0

1

0

1

source of problems was the fact that we gave a

20

O 4

0

1

0

1

0

1

0

1

high weight to the presence of the NE of the

Table 3: Results for Spanish

sought type within the retrieved snippet and in

some cases the name was misspelled in the blog

entries, whereas in other NER performed by

Alexandra Balahur, Elena Lloret, Oscar Ferrandez,

FreeLing either attributed the wrong category to

Andrés Montoyo, Manuel Palomar, Rafael Muñoz.

an entity, failed to annotate it or wrongfully an-