Department of Computer Science, Aberystwyth University, Aberystwyth, Ceredigion, SY23 3DB, UK. liakata@ebi.ac.uk|Department of Computer Science, Aberystwyth University, Aberystwyth, Ceredigion, SY23 3DB, UK. liakata@ebi.ac.uk|Department of Computer Science, Aberystwyth University, Aberystwyth, Ceredigion, SY23 3DB, UK. liakata@ebi.ac.uk|Department of Computer Science, Aberystwyth University, Aberystwyth, Ceredigion, SY23 3DB, UK. liakata@ebi.ac.uk|Department of Computer Science, Aberystwyth University, Aberystwyth, Ceredigion, SY23 3DB, UK. liakata@ebi.ac.uk