oots
    the unwell well badly<br />

2.  What is the probability of generating “is well well”?<br />

3.  What types of ambiguity are exhibited by the phrase in (b)?<br />

4.  Given any PCFG, is it possible to calculate the probability that the
    PCFG generates a string of exactly 10 words?<br />
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        <a href='#' class="p-2">Exercise 23.3</a>
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