10. An apparatus for selecting an answer to a natural language question, comprising: a processor and a memory; wherein the processor includes: a question parsing module configured to detect a named entity in the natural language question and extract information related to an answer from the natural language question; a candidate answer generating module configured to search in linked data according to the detected named entity and generate a candidate answer according to a search result; a feature value generating module configured to parse the candidate answer according to the information related to the answer and obtain a value of a feature of the candidate answer; and a candidate answer evaluating module configured to evaluate each candidate answer by synthesizing the value of the feature of the candidate answer thereby selecting the answer to the natural language question; wherein the candidate answer generating module comprises: a matching unit, configured to search for a Uniform Resource Identifier, URI, matching to the named entity in the linked data based on similarity; a spreading activation unit, configured to search with spreading activation for a URI linked to the URI matching to the named entity by using linking relationship between URIs; and a candidate generating unit, configured to generate the candidate answer according to the linked URI; wherein the candidate generating unit uses a label contained in the URI as the candidate answer.
10. An apparatus for selecting an answer to a natural language question, comprising: a processor and a memory; wherein the processor includes: a question parsing module configured to detect a named entity in the natural language question and extract information related to an answer from the natural language question; a candidate answer generating module configured to search in linked data according to the detected named entity and generate a candidate answer according to a search result; a feature value generating module configured to parse the candidate answer according to the information related to the answer and obtain a value of a feature of the candidate answer; and a candidate answer evaluating module configured to evaluate each candidate answer by synthesizing the value of the feature of the candidate answer thereby selecting the answer to the natural language question; wherein the candidate answer generating module comprises: a matching unit, configured to search for a Uniform Resource Identifier, URI, matching to the named entity in the linked data based on similarity; a spreading activation unit, configured to search with spreading activation for a URI linked to the URI matching to the named entity by using linking relationship between URIs; and a candidate generating unit, configured to generate the candidate answer according to the linked URI; wherein the candidate generating unit uses a label contained in the URI as the candidate answer. 14. The apparatus according to claim 10 , further comprising a merging module configured to merge candidate answers retrieved from different linked data according to the feature of the candidate answers.