Input: Identify the most salient words:

faces of young people in the shape of a heart .

Output: face
heart
shape

Input: Identify the most salient words:

just next to the pool was a huge complex of buildings full of classrooms and halls .

Output: building
classroom
hall

Input: Identify the most salient words:

looking over the lake towards the range which are shrouded in cloud

Output: cloud
lake
look

Input: Identify the most salient words:

aircraft conduct a flyover as part of the memorial

Output:
aircraft
conduct
part