Simple Sentences:
* The librarian was knowledgeable about the history of the library.
* He is a knowledgeable source on all things related to space exploration.
* My grandmother is knowledgeable about local folklore and traditions.
Sentences with More Context:
* Despite her young age, she was incredibly knowledgeable about ancient civilizations.
* The teacher was knowledgeable about the subject matter and passionate about sharing her knowledge with her students.
* He is a knowledgeable investor who understands the intricacies of the stock market.
Sentences with Different Meanings:
* The lawyer was knowledgeable about the case, but he wasn't able to sway the jury. (Here, "knowledgeable" means having information, but it doesn't necessarily mean success.)
* The chef was knowledgeable about different cuisines, but his cooking was uninspired. (Here, "knowledgeable" means having knowledge, but it doesn't necessarily mean skill.)
Remember: "Knowledgeable" implies a deep understanding or extensive information about a specific topic or subject. It's not the same as simply knowing something - it suggests expertise.