Add extract "scrape" mode

[WolfgangFahl]

Given a list of urls on "known" source sites like:

• Wikidata
• Ceurws
• Crosssref
• WikiCFP

the search should visit the given urls and extract the meta data according to the API or structure of the target pages.

Acceptance Criterion: Situation The list of URLs

• a) http://ceur-ws.org/Vol-2635/
• b) http://ceur-ws.org/Vol-2599/
• c) http://ceur-ws.org/Vol-2553/
• d) http://ceur-ws.org/Vol-2512/
• e) http://ceur-ws.org/Vol-2489/

is given Action search and extract Expected Result

• a) DL4KG2020
• b) BlockSW-CKG 2019
• c) SemTab 2019
• d) DI2KG2019
• e) KGB-LASCAR 2019

1. DL4KG2020: Proceedings of the Workshop on Deep Learning for Knowledge Graphs (DL4KG2020) (http://ceur-ws.org/Vol-2635/)
2. BlockSW-CKG 2019: Proceedings of the Blockchain enabled Semantic Web Workshop (BlockSW) and Contextualized Knowledge Graphs (CKG) Workshop (http://ceur-ws.org/Vol-2599/)
3. SemTab 2019: Proceedings of the Semantic Web Challenge on Tabular Data to Knowledge Graph Matching (http://ceur-ws.org/Vol-2553/)
4. DI2KG2019: Proceedings of the 1st International Workshop on Challenges and Experiences from Data Integration to Knowledge Graphs (http://ceur-ws.org/Vol-2512/)
5. KGB-LASCAR 2019: Joint Proceedings of the 1st International Workshop on Knowledge Graph Building and 1st International Workshop on Large Scale RDF Analytics (http://ceur-ws.org/Vol-2489/)