The commutator length of ⟨a,b|b²=1⟩ is at least two, since there's an element of commutator length two in it.

When she was not speaking honeyed words, she used earthy language, outswearing the men around her.

… Cyril III ibn Laqlaq’s correspondence which reflects genuine—if intentionally vague—concern for the secretive community of Christian converts and reverts [who had converted to Islam before].

Special attention was paid to the presence of the polynuclear hydrocarbons suspected of influencing lung cancer, ….