ner_tags: O O O O O O O O O O O O B-Person O B-Person O O O O B-Organization I-Organization I-Organization O O B-Grant I-Grant I-Grant I-Grant I-Grant B-Person O O O O O B-Organization B-Fellowship I-Fellowship O O B-Person I-Person O O O B-Telescope O O B-Person I-Person O B-Person I-Person O O O O O
tokens: We thank the anonymous referee for useful suggestions that improved the paper. AB and MLB acknowledge support from the European Research Council under the EC FP7 grant number 280127. MLB also acknowledges support from an STFC Advanced/Halliday fellowship. We thank K. Grainge for providing the SKA specifications, and F. Abdalla and E. Chapman for useful comments and suggestions.