Sentence:  The problem of locating the roots p of \zeta, and consequently the problem of estimating the error in the <WSD>prime number theorem</WSD>, is closely related to the problem of estimating the growth of \zeta in the critical strip \{0\le\mathrm{Re}\ s \le 1\} as \mathrm{Im}\ s\rightarrow\infty. 
Meaning of the word marked with <WSD> tags:  The theorem that the number of prime numbers less than "n" asymptotically approaches "n" / ln("n") as "n" approaches infinity.