Extract specific string of text from cell

[CF64]

Hello,
I have a column of cells which contains strings of text separated by line breaks.
Is there a formula which I could use to find a string which starts with specific text and pull that string into the adjacent cell?
For example, in the table below "Massachusetts:..." appears in multiple cells with a different city after the ":"
Is there a formula to enter in the adjacent cell in Column B which searches for "Massachusetts:" and returns the entire string (i.e. Massachusetts: City) regardless of which line it appears on in each cell in Column A?
Thank you for your consideration of my question

Column A	Column B
Massachusetts: Boston Connecticut: Hartford California: Los Angeles	Massachusetts: Boston
Connecticut: New Haven California: San Diego Massachusetts: Boston	Massachusetts: Boston
Connecticut: Hartford California: Sacramento Massachusetts: Salem	Massachusetts: Salem

 

[Fluff]

@gyagos please do not hijack another members thread. You need to start a thread of your own. Thanks

 

[CF64]

Thought I'd posted that, but how about

=TEXTJOIN(CHAR(10),,FILTERXML("<k><m>"&SUBSTITUTE(SUBSTITUTE(A2,CHAR(10),"</m><m>"),":","</m><m>")&"</m></k>","//m[starts-with(.,'Mass')]/following::m[1]"))

Thank you!

 

[Fluff]

My pleasure