The nouns are people, world, Calgary, and July. Calgary and July are proper nouns.
Flock - To congregate, or for a group of people to head to a single point. "When the weather gets hot, people will flock to the only lemonade stand on the beach."
The flock of sheep is blocking the road.
The correct sentence is - Heide saw a flock of sheep on a mountainside
A flock of geese flew over the lake today.
This sentence would be punctuated in the following way: "It's a flock of emus," stated Kien.
In the sentence, "Joseph went to the park to see the flock of seagulls," there are three singular nouns: Joseph, park, and flock.
The subject of the sentence, "You saw a flock of geese." is the pronoun, you.
Extrovert refers to a person who is sociable, and gains his or her energy from being around people. Therefore, suitable sentences would be: You can tell that Lisa is an extrovert because people seem to flock to her. As I am not an extrovert, I really do not enjoy parties.
The flock of crows cawing make a cacophony.
Flock
Birds of feather flock together.
There's a good-sized flock of grouse right over there!