Regex: how to match anything before and after uppercase sequences with a period as delimiter? -

i have series of sentences containing uppercase keywords in large text containing several other sentences. need match sentences contain uppercase words (1 or more), instance:

this sentence should matched. , 1 should too. other sentence should not matched. 

any suggestion? thanks! not advanced user...

this it:

^.*\b[a-z]+\b.*$ 

• \b assert position @ word boundary
• a-z single character in range between (index 65) , z

https://regex101.com/r/kun41w/1

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if i not counted uppercase word in sentence matches conditions. use this:

^.*\b[a-z]{2,}\b.*$ 

• {2,} quantifier — matches between 2 , unlimited times, many times possible, giving needed