How similar are these two sentences, on a scale from 0-5 (0 is "not similar" and 5 is "very similar")?

Israel vows to deny Hezbollah after air strike
Car bomb kills four in Hezbollah Beirut bastion: minister

Choose from:
(i) 0
(ii) 1
(iii) 2
(iv) 3
(v) 4
(vi) 5
(ii)