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"Condoms are designed to protect against sexually-transmitted diseases."

"The teacher wrote the math problem on the chalkboard with white chalk. "

"As a stockholder in the company, Sarah receives a portion of the annual profits. "

"That sedimentary is made of layers of sand and shells pressed together over time. "

"Simple Sentence: "The students listened carefully to the speeches given by the school president candidates." "

"The twins resemble each other."

"The flowers were artificial, and he thought them rather tacky."

"Can you demonstrate the new tools for us?"

"The orphanage affiliated several children with new families. "

"The students in the class were a homogeneous group; they all seemed to have similar study habits. "

"The caterpillar metamorphosed into a beautiful butterfly. "

"The school offered an alternative schedule for students who needed more time to study. "