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After making a statement in the prior sentence, I want to make a statement that contradicts it and then asks a question. I want to use however and I want to know to make my contrarian statement. I am just unsure of the best way to go about this.
Here are the three options that narrowed it down to:
... end of statement. I want to know, however, are there any ... ?
... end of statement. However, what I want to know is: Are there any ... ?
Option 3 (combination of 1 and 2):
... end of statement. What I want to know, however, is: Are there any ... ?
Note: Feel free to correct my tags for this question. I have no idea how to best tag this type of question other than the 3 I chose.