Phil Help~ Grammar and Semantics

Hi there,

I've been stuck with this assignment for days, would really appreciate if someone would help me with it. If you could help me with any one of this questions, I'll probably (hopefully) have a better understanding of it, so please help.

Thank you tons.!

1. Find a formula ψ of L such that ψ is not a sentence but contains a part that is a sentence.
ψ =

2. Find a formula ψ of L such that ψ contains occurrences of a variable Ɑ that are bound and at least one occurrence of Ɑ that is free.
ψ =
Ɑ =