Similar Vectors No fracking 16 3 8 No fracking 40 4 22 No shale gas 28 4 15 Frackingonecointwosides 2 1 0 No fracking 16 3 8 No shale gas 19 3 10 Warning shale gas with text 12 2 6 What is fracking ? 26 2 14 Warning shale gas 9 2 4 Derrick 72 6 41
