Search for a word in between words

To give you even more information, in my datafile, the word that I am
searching for is 'marked' by the word in the line before it.  For example,
the lines in my datafile look like..

line 1
line 2
line 2
Installation
example
Installation
line 4
line 5
line 6

and all I want is the word in between the words Installation.  Because I
don't know what the word in between the words Installation will be, I'm not
actually searching for the word Installation but for the word in the next
line after Installation.  Does that make sense?  Any ideas?

• Search for a word in between words by Allison Ogle
• RE: Search for a word in between words by Timothy Johnson
• Re: Search for a word in between words by John W. Krahn
• Re: Search for a word in between words by Agustin Rivera