Building began with summer house for example (7,4)
I believe the answer is:
numbers game
'house for example' is the definition.
The definition and answer can be both acts as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'building began with summer' is the wordplay.
'building' indicates an anagram.
'with' says to put letters next to each other.
'began'+'summer'='begansummer'
'begansummer' with letters rearranged gives 'NUMBERS GAME'.
Can you help me to learn more?
(Another definition for numbers game that I've seen is " Statistics".)