Concept:
The connector yet is a coordinating conjunction used to show contrast between two ideas.
It is similar in meaning to “but” and joins two independent clauses.
\[
\text{Clause 1, yet Clause 2}
\]
Step 1: Identify the two independent clauses.
Clause 1 = He ran fast.
Clause 2 = He could not win the race.
Step 2: Join the clauses using the connector "yet".
Final Answer:
\[
\boxed{\text{He ran fast, yet he could not win the race.}
\]