QUESTION: Given the sentence "Many people walk along a crowded street." is it true that "A lot of people are walking in a parade."?

Let's solve it slowly: Many people walk along a crowded street does not indicate that they are walking in a parade.
The answer is it is not possible to tell.

QUESTION: Premise: "Two dogs are fighting on brick pavement."
Hypothesis: "The dogs are fighting outside."
Do we know that the hypothesis entailed by the premise?

Let's solve it slowly: The dogs are on brick pavement so they must be outside.
The answer is yes.

QUESTION: Given the sentence "A tan dog is running along side another dog outside." is it true that "Two big dogs are chasing after the same ball."?

Let's solve it slowly:
Not all dogs are big. The fact that one dog is running along side another dog is not indicative of either of them chasing a ball.
The answer is it is not possible to tell.