Text mining is difficult for many reasons. Which of the following is NOT a reason that text mining is difficult?

Group of answer choices

Text can contain grammatical errors, misspelled words, incorrect word usage, and inconsistent abbreviations.

Text lacks structure $($i$.$e$.,$ text is stored in varying lengths and with a variable$/$unpredictable number of words, rather than following a pre$-$specified structure$).$

Text is typically stored in an $$old$-$fashioned$$ relational database that requires advanced SQL database programming knowledge.

Text often requires context to fully understand.