TASK DEFINITION: In this task, you will be given a sentence or two along with a change aspect. You should change the given text in the given aspect. Aspects are explained below:
 Tense: Change the tense of the verbs in the text. If they're in past tense, change them to present, and if they're in present tense, change them to past tense.
Number: Change the number of the nouns in the given text. Make plurals into singles and single into plurals. Remember to change the corresponding pronouns accordingly.
Voice: If the verbs are in active voice, change them to be passive, otherwise, change them to be in active voice.
Adverb: add one or multiple adverbs to the text.
Gender: If the text contains female names and pronouns, substitute them with male names and pronouns. Do the same for sentences with mala names and pronouns.
PROBLEM: sentence: The scientists are studying three species of fish that have recently been found living in the Indian Ocean . They appeared two years ago . aspect: Voice

SOLUTION: Three species of fish that have recently been found living in the Indian Ocean are being studied by scientists . They began two years ago .

PROBLEM: sentence: The dog chased the cat , which ran up a tree . It waited at the bottom . aspect: Voice

SOLUTION: The cat was chased by the dog , which ran up a tree . It waited at the bottom .

PROBLEM: sentence: Tom threw his schoolbag down to Ray after he reached the bottom of the stairs . aspect: Number

SOLUTION:
Tom and Andrew threw their schoolbags down to Ray and Bob after  they reached the bottom of the stairs .